Here's an interesting bit of trivia. Way back at the begining of the century, nobody benched. (Remember, it isn't an Olympic event or a legit powerlifting move) Even then they realized that bracing yourself against a bench with a lot of weight on top of you was a bad idea.
Whenever the body moves through space it works more effectively and more stabilizers come into play. That's why chins, squats and dips are so good.
The bench is bastard movement that got popular because it feels good. (Kinda like the preacher curl -- another lousy exercise) It's also an "ego" move. Who doesn't like seeing all that weight go up? (Even if the best benchers have short arms and the bar moves 4 inches)
These days when somebody asks me what I bench, I usually say; "I have no idea." It freaks them out.
Or you can ust tell them what you used to bench before you blew out your shoulder.