Terrible. There's nothing wrong with Pfister's physique. He may not look like a comic book character, but he looks like a normal in shape guy. G-Sot just has some weird ass ribs. Sylvia didn't look like that during his UFC run. Daly just looks like a normal not fat chick.
Roy Nelson is the only guy on your list who had a truly terrible physique during his UFC run. Timmy had some weight to him, but he wasn't really fat and always had decent cardio for a HW.
Nelson has the worst physique in UFC history and second place might not even be close.