After a week of BJJ/Submission Grappling training, it would make a difference. Zimmerman had some "MMA" training. If it was actual MMA training, I am 100% confident he understood the difference and could better protect himself from guard than from under mount. How much better is up in the air, but having trained in BJJ for going on 8 years now, I've seen a LOT of people come through the door. It is IMPOSSIBLE for someone who trains regularly to fail to achieve blue belt level skill within about 2 years. It's just impossible. Even the most physically challenged, uncoordinated person will develop rudimentary proficiency just through exposure and repitition.
And the point remains that to an untrained, lay person observing the fight in the dark, these two very different positions would be indistinguishable, even though we (who train in martial arts) understand that there is a profound difference between mount and guard.
Yes! Furthermore, many grappling courses that're geared towards LEOs, (at least the ones I've seen) focus on weapon retention and getting back to a safe position, where the weapon can be used, if need be.
We had the trial on yesterday at work, and just as I was leaving for the day, they were going to start talking about his MMA training, but I left before I was able to see that segment. Can anyone shed any light on that?