Just did a little more research on Carwin's record. In 10 fights, he's only fought a total of 11 minutes and 13 seconds, or an average of 1 minute 7.3 seconds per fight. Although he hasn't really been tested by an upper echelon fighter, it's quite impressive!
Rumor has it the winner of this fight will be the #1 contender for the title. I'd say winner fights Kongo, then that winner is the #1 contender (who will get their ass kicked by Brock