Sunrise would probably just humour his teammates as opposed to really get into the cooking duel or whatever it is that they are calling it this time. There is really nothing wrong with it, just not really his cup of tea or even mature enough for him to care much about. Besides, most of his cooking recipes are based on vegetables, fruits and eggs - that would be pretty hard to sell to others and he feels it is not worth the effort in the slightest.

How would he judge other's efforts? Hard to tell, Sunrise is not exactly the sort of picky eater and he probably would not take anything under strong consideration unless it happens to be poisonous. No idea who would win it. Kinda hard to tell, generally speaking, it is not like his teammates are exactly people he is used to eating with anyway. Lack of preference, I guess.