Clearly, b/bers like Coleman who attain glute striations have a tremendous amount of determination and dedication to their diet and training. Imagine, having striated glutes! How much dieting does it take to get to that point?
After all that dieting, and after pre-judging, Ronnie and the guys go to the buffet line and just eat until they just about pass out. Then they go to their hotel and drink beer until they do pass out.
When they get to the contest that night, their stomachs are still greatly bloated from all the food and beer they ingested that afternoon. And that explains the bloated gut/striated glute disparity.