Centers assume less of a burden in pass protection, which is a plus for Incognito.
Fact is, the center is responsible for making line calls and has to be the leader of the line. Center assumes the burden of everyone's pass protection. He still has to pass protect...how is it any different than if he were at guard? The only difference is that he now makes the line calls.
They mentioned that later. I think they just meant from an in-play standpoint, he's not going to always be engaged with somebody, and when he is it will mostly be in a double team-help role.