lol, do some research on serra's ground game, you might be surprised, Serra actually has one of thee most underrated ground games.
I would actually give serra a win vs hardy and kos, hardy because IMO he is not that great of a fighter and kos for on the feet even though i think kos is becoming a good striker i give serra the power in the hands, on the ground kos would be neutralized on what ever he did
There is nothing to research, the statistics say it all. I could careless about a blackbelt in BJJ, either. I'd be willing to bet 95% of top ranked fighters have one, also.
Koscheck would beat his ass into next year and Fitch would wrestle him to death. Hardy on the other hand, I've never been a fan, 'cause he hasn't really been tested. He had decisions over anyone with mediocre notability, which includes Mike Swick and Marcus Davis.