P&T's whole deal is revealing the low-hanging fruit in frutherance of the greater trick. There are some circles that shun them for revealing things, but they're still respected by those same groups, and are well-liked all around. Why? Penn and Teller respect the artform. Valentino just went around being a dick about it, with complete contempt for the craft. That's the difference.

Seriously... his deal is magicians lie? You mean it's all an act? What a revelation. At no time in the last few thousand years has anybody in the history of the world ever figured that out. Nope, none at all.