I think I'd do better on Survivor. I don't have much in the way of actual survival experience, but I've got a crapton of experience working in gruelling outdoor environments, so I think I'd have a decent shot of doing well in that aspect, and I'm a sneaky bastard.

What would inevitably be my undoing, though, would be stupid people. When you get idiots like Upolu or Ometepe, it doesn't matter what the hell you do or how rational your case is, stupid people will ignore your logic and rationality. When that kind of crap happens, I tend to be rather unkind. So I think that that kind of thing would eventually get me booted, but it totally depends what sort of tribe I get put on.