If I had to guess, I'd say that Iron Man was stolen from a customizer. Don't know who though, but the quality of that design is too high to be bootleg original, and it doesn't look like any LEGO torso I'm aware of.
As for bootlegs? I'm against them. They ARE illegal, and so I want nothing to do with them. I know this isn't totally black and white, but they are still breaking IP laws. With that said, I don't mind other people buying them if they want them, as I can see their appeal (and the quality isn't bad anymore), but I don't want to associate myself with these, especially since I've heard of people being arrested for buying bootlegs of similar products. It's hazy, and therefore, I shall avoid them. But I am glad that others enjoy them.