If you don't use jump guard, or pull guard on me, I'll not use body slam. Is that a fair game?
If I pull guard on you - a technique with relatively low risk of injury to yourself, it's fair for you to slam me?
Jumping guard is something that a lot of schools frown on. For example, Danaher bans it in his gyms because of the risk of injury to the person you're jumping on. Jumping guard is often illegal at lower belts in BJJ tournaments. Slams are illegal for higher belts.
The "leg twist" technique is used to prevent your opponent from picking you up.
Very different situation than when you're in guard.
When you use pull guard incorrectly, you have no protection on your head, neck, chest, and groin. Pulling guard correctly negates that danger.
Fixed that for you.
(That said, I'm not a fan of guard pulling other than in certain types of sport competition where the rules favor it. In a real fight, if we go to the ground I want to be on top. Guard is for equalizing the situation if I lose the battle for top position. I don't want to be there voluntarily.)
My professor has said it's his favorite position, and I think he's very sport-minded in his approach. I tend to pull guard in situations where we've been wrestling for a minute already with nobody managing to get a take-down.
In the following clip, his right elbow is so close to his opponent's face. If his opponent uses pull guard on him, his right forarm can easily drop on top of his opponent's throat.
No, it can't. Well, maybe it can. But not really.
The first thing I notice is both of them have a grip that is going to make that difficult. The person who starts on the right and ends on the left is pushing on the opponent's elbow. If he still has that elbow, he's going to be framed to prevent it from dropping. If the person who starts on the right pulls guard, then he's got the sleeve of his opponent. He can use this to leverage against that as well.
But even then, you probably won't be in a good position for that anyway. When standing, you are equal in height. When your opponent has you in guard, they are "taller" than you, in that it's very difficult to get your head near their head. Their hips keep your hips back, which keeps your torso and arms further back. In order to try and drop the elbow onto your opponent's throat, you are going to be stretched out to be way off balance. Unless you're a foot taller than your opponent, this isn't really how it works. You're not choking them. You're getting swept.
All of these assume that both fighters aren't adjusting their hand positions during the guard pull. That the person pulling guard won't adjust to defend his neck, or that the person on top isn't going to change to a grip that's less dangerous once you're in guard.
I'm just a white belt in BJJ, but even I know that you're not at risk of being choked from the person on top when you pull guard. We start in that position all the time, and even with people a foot taller than me, I've never been in a position to be choked when I did.