It's not a good metric to compare generations output considering most AAA titles had half the releases this gen than the last. ND had 4 games on the PS3 and only 2 main ones this year (not counting the side-content). R* had LA NOIRE, Max Payne 3, RDR & 2 GTA games in one gen. Now they barely got by with one current gen release. Rocksteady, same thing.
Even Ubisoft had to disrupt it's mainline AC series to move to Origins. Phil Spencer had an incredible mountain to climb on, knees capped and barely any surviving tools to keep up with SONY and I'd dare say he puts up and incredible fight this gen. Don was simply riding on the coatails of 360's success and the PS3'S disastrous release.