jobo
Grandmaster
its not a trick question, my style has stand up grappling arm bars wristlocks' etal. To show good faith il tell you how I assess its effectiveness .Sorry, not playing your game.
it has good body mechanics, its not operating in the universe of fantasy moves. So it has the potential to be effective.
how ever if you know what's coming you can avoid it with out to much difficulty, I just refuse to let people grab hold of my arm so its near impossible for them to use it on me
so its fair to say that its effectiveness against a skilled fighter is quite low.
it also requires good speed and co ordinations to pull off, so if the opponent is faster than you are you may be struggling to pull it off.
then there is strengh, using it on a much stronger oppoinent may be problematic, if they just unfold their arm out of the wrist lock and you haven't the strengh to stop them. .
so in essance I consider it most effective against slow weak unco ordinated opponents', of reasonable use against averagely strong fast co ordonated oppoinent. And highly suspect against lightning fast, strong trained fighters