I was staying out of this one since my earlier comments, as to go through it, I'd want to pick up everything that is wrong and correct it... but I don't have the next 5 years to do so, and bluntly, I douby Hanzou here would hear any of it. But then you posted this.... you nearly had me in on your "ninjas" comments (dude, just no...), but this? Right....
To be fair, Bjj is a modified form of Judo, not Jujutsu.
Judo is Jujutsu. It's original name was Kano-ha Jujutsu... pretty simply "Kano's branch of Jujutsu". Judo is simply one form of Jujutsu, you realize. BJJ has it's roots in an early expression of Kano-ha Jujutsu, combined with a few other things, and given a focus on groundwork, but the origins are Jujutsu.
So, uh... no. Wrong.
Judo is the modernized form of Jujutsu, which is an archiac battlefield art.
No, Judo is a particular subset of Jujutsu, founded by Kano Jigoro, and developed/spread as much as an educational tool as a martial art. Kano's focus was on education as much as, if not more than, martial arts. Secondly, "Jujutsu... is an archaic battlefield art"? Uh, nope. Jujutsu is a generic term applied to a very wide range of Japanese unarmed or lightly armed systems of combat, which might be a stand-alone system, or part of a larger syllabus. If part of a larger syllabus, it might be a major, or minor section. But very, very little of it was "battlefield"... why? Well, because you'd use weapons on a battlefield... bows and arrows (later, firearms), spears and other polearms. Why would you go onto a battlefield and use unarmed methods in anything other than the worst of all possible situations? Then you get into the various forms Jujutsu can take... there were some systems that were very much for the Bushi (warrior class), which often involved small arms (and might be referred to as Kogusoku, referring to a "small set [of weapons]", or Koshi no Mawari, referring to "[the weapons found] around the waist", or might be Yawara, Yawaragei, Hade, Goho, Judo [here's a history lesson for you... that term was used in at least one system about 150 years before Kano...], Kumiuchi, Wajutsu, Torite, Te, and many more), or there were systems that were geared up as a form of "commoners yawara", which would not include weapons, but be almost exclusively unarmed. These systems developed in a large variety of circumstances over a very long period of time, with the earliest Jujutsu-centric system being founded in 1542 (Takenouchi Ryu - although there were unarmed aspects to some earlier systems, such as Kashima Shinryu and Katori Shinto Ryu), and continue to be developed today, some of which are new branches/variants of existing ones (such as Moto-ha Yoshin Ryu, a branch of Hontai Yoshin Ryu founded a few decades ago, or Hakko Ryu, a derivative of Daito Ryu from the 50's), others are purely new systems. And they are all Jujutsu.
So, uh... no. Wrong.
Judo all but supplanted Jujutsu at the turn of the previous century, as it modernized JJJ for the modern era.
Judo became favoured of the Police and the educational system due to Kano's very effective lobbying of the education department, and in part due to the performance of Kano's students in competitions. The "modernization" you refer to is more about Kano re-structuring the way he presented and taught his approach to Jujutsu, dominantly for the school system. In a number of ways, Kano simplified his approach from the Ryu (systems) he had been taught... but that's not really the same as "modernizing" the system. The structure, the mechanics, the uniform, the etiquette, the forms of attacks, the usage of Japanese kata, and so on, are all straight out of classical Jujutsu... in fact, the only real thing he "modernized" was the idea of mass-teaching, which lead to the development of the i-dan (kyu and dan) ranking, as well as the adoption of coloured belts. But, to be blunt, that form of ranking was adapted from the game "Go"... which is a very old game... so maybe not so much "modernizing". The fact that other modern systems have followed suit, particularly in the ranking ideas, doesn't mean that Kano was "modernizing" Jujutsu... just that he hit upon an idea that caught.
So, uh.... no. Wrong.
I wouldn't say that Bjj has its basis firmly in classical Jujutsu, anymore than saying that Judo has its basis firmly planted in classical Jujutsu.
Judo absolutely has it's basis firmly planted in classical Jujutsu, specifically Tenjin Shin'yo Ryu and Kito Ryu. In fact, it's considered by some to be the current branch of Kito Ryu, as Kano was the successor to his line of that system... and it's teachings are preserved within the kata of the Kodokan (the Koshiki no Kata basically is Kito Ryu, in a nutshell). It's restructured (well, the Koshiki no Kata isn't, but Judo as a whole is), but so are many classical systems.
So, uh... no. Wrong.
Both are very different than the JJ systems they came from, and other things outside of Jujutsu were added to both.
What do you think has been added to Judo? Here's a clue... there's been a lot simplified, not added in. As far as BJJ, not much has been added there, either, it's simply developed along a different line (focusing on the ground, as a major aspect), with the overtly competitive aspect demanding constant adjustment, additions to, and adaptations to the mechanical methods... but it's basic approach is the same. Basically, someone comes up with a new sweep... so someone comes up with a counter... and then a counter to the counter... and so on. That's not adding things, it's developing naturally within it's context. And, for the record, that type of development has nothing to do with real fights/self defence, as it's to do with a competitive arms race... a street fight (to use an over-used and inaccurate stereotype) simply doesn't require development in that direction.
So, uh... no. Wrong.
Judo and Bjj are dynamic, living arts, while JJJ is a dead art.
And what, exactly, is your experience with actual Jujutsu? I'm assuming you're referring to the way Judo and BJJ do randori/roll/spar (whichever term you want) here... you do realize that such training methods have been a part of classical traditions for centuries, yeah? I mean, the reason Judo has such a focus on randori is because Kano's first teacher (classical Jujutsu) was a big proponent of it... it comes directly out of Jujutsu training methods. His second school had randori as well... and so did his third (although the teacher wasn't as fond of it, and Kano ran those sessions himself). This was in two separate systems, not just one, you realize... and how could Kano have "supplanted Jujutsu" by winning all the Police tournaments if none of the other systems did randori? They'd have had to to be in the tournament at all... how about the guys from the Handa Dojo learning under the head of Fusen Ryu? They beat Kano's guys, based on their explorations in randori, under the guidance of Mataemon Tanabe... but, of course, these classical systems are dead, and can't possibly do all that sparring and stuff....
So, uh... no. Wrong.
Ironically, when you go to Japan, they consider Jujutsu to be Bjj.
No, they don't. They consider BJJ to be BJJ. Jujutsu is pretty much any unarmed combat system, particularly non-striking ones (throws, chokes, locks etc). Perhaps MMA fans in Japan think automatically of BJJ, but that's like saying that if you say "Kobudo" to a karate student, they think of Okinawan weapons systems, but say it to a Koryu practitioner, and they have a very different idea in mind.
So, uh... no. Wrong.
Classical Japanese JJ is pretty much nonexistent in Japan.
Wow, I'll have to tell my friends that are training in, or have trained in, Sosuishi Ryu, Takeuchi Ryu, Araki Ryu, Tenjin Shin'yo Ryu, Kukishin Ryu, Asayama Ichiden Ryu, Shinden Fudo Ryu, Hontai Yoshin Ryu, Kashima Shinryu, Tatsumi Ryu, Shindo Yoshin Ryu, Yagyu Shingan Ryu, Shinto Tenshin Ryu, Fusen Ryu, and more that they've trained in non-existant things... not to mention the dozens of other systems that I know of, have seen demonstrations of, have contact with people involved with, and so on.
So, uh... no. Wrong.
Makes you wonder where all those "traditional" Jujutsu dojos here in the states come from.
There's certainly a lot to make us wonder here, yes....