I agree. He got tired versus Koscheck too. He isn't even fighting the sub because he is tired and makes it easy for them to sink it in.
That was some slick jiujitsu from Belfort. He mixed in his punches well to soften Johnson for the choke. He controlled his wrist from beneath and snuck it in. It was very smooth work and the best grappling I've ever seen from Vitor. Carlson would have been proud!