Quote Originally Posted by VeloZer0 View Post
I don't really see any basis to assume Kuja is smarter. If you want to be nit picky, he couldn't even figure out he was mortal.
How would he figure that out? Does he seem like the dare devil type to you?

All the Genomes have long lifespans and indeed the regular ones have no concept of time. Kuja seems to be the odd one out because he was a temporary model.

My guess is he made an incorrect assumption based on the rest of his species.