That is what JOJ said, he said that that limited ROM is the reason why it was so good. He made an anology that i have to go look for. but it made sense.
You wouldn't have to worry about over-extending the joints, that's for sure.
There prolly isn't any other type of lift that is as cool for measuring sheer/brute-ass strength. There is absolutely no fking way to cheat. Your legs can't help, abs can't help, tricep max strength is tested to its limits, no bouncing, etc.
My guess is that if you took a powerlifter that used all the back-arching wide-grip (for decreased distance) techniques and his bench shirt-- and threw him on the floor to do close grip floor presses (with a customary weight)... his 'normal' lifts would drop so drastically he would think there was something wrong.
I'm not saying that they don't have their place, they would be best suited for powerlifters, not bodybuilders.
On the other hand, they may help a lagging tricep... I just think there are so many other exercises or styles of training (that are much less time-consuming) that a "bodybuilder" could do.