70-80 sounds about right. Most of the games look decent and fun to play. Though, not exactly essential.. which should be expected from launch titles. And its pretty obvious some of the games were rushed to meet launch (Killer Instinct, Forza.) Both of which lack content or features. Others lack a little polish - Dead Rising 3, Crimson Dragon etc.
But I think whats hurting the games is that we've had such an amazing lineup this year. I mean this year alone we've had the TLOU, Bioshock Infinite and GTA V. So, these games are going to have to do something quite special to measure up. And from what I've seen, they don't. Honestly though.. I can't say that I'm not if a bit dissapointed at the games, for both next gen consoles.
Hope Ryse and Forza fares better.