It doesn't matter. Allen and Mario are more of pass rushing forces than Osi because of their various pass rushes. I know that Osi has done the bull rush before but Allen and Mario pose much more of a threat because of their versatility off the edge.
Towards the end of the year there were countless times where Osi just sprinted off the edge and the QB just stepped up and Osi had no impact on the play. He still has some work to do in crafting his pass rushing art.