I always find it odd when a fighter jumps up out of a weight class that they have been resident in after a destructive loss, without seeking a rematch with their conqueror.

The psychological aspect must weigh heavily, because, as a heavier fighter, you should not lose to anyone lighter than yourself, but for Nathan it will be strange for him campaigning at CW, knowing that there is a guy in the weight class below that has pulverised him.