As far as I'm concerned, Khan won a close-ish fight. Dirrell lost a close, poor fight by fouling and not taking any kind of initiative in the slightest, even when he had the best opportunity of life to. The fights aren't comparable.
I dont see the similarities myself. Khan and Dirrell had completely different gameplans, Khan was genuinly trying to create space for himself to get punches off before slipping away to reset. On the flip side Dirrell was genuinly scared to engage and tried to steal the title away in another guys hometown which is stupid in itself, a few times Dirrell fell to the floor instead of the prospect of getting cornered by Froch. Its a shame that a guy of Dirrell's talent threw away a fight he could have won through being a coward or maybe just pure stupidity.
Dirrell wanted to spoil = the fight stunk Khan wanted to spoil = action fight because he still got hit a lot One guy controlled the pace more than the other.
What is very evident, and has been for a while is the fact that both Khan and Dirrell are dirty, whiny, bitches.