I dont understand how you guys dont get it. Rogan is a fight fan like the rest of us. He EXPECTED Shogun to roll Vera, like the rest of us. When he didn't, Rogan was surprised. He emphasized the shots Vera landed because they were unexpected, opposed to when Shogun landed - that was expected to happen and was thus less surprising.
Like in Shogun vs. Machida I, Machida was expected to blitz Shogun. So when Shogun landed, Rogan was surprised and emphasized it more. Then, again, everyone said he was bias towards Shogun (now he's bias against him? No).
In Shogun vs. Machida II the commentary was more technical because neither fighters were underdogs.
Honestly, I noticed it during the fight, came to the exact same conclusion, and promptly put the whole thing out of my mind.
It was a much closer fight than anyone really expected, and the commentary reflected that.