Closing in on 80% completion for all the games I played on the PS3 based on gamercards.
I am up to 79.8% !
It's misleading because if you didn't purchase a DLC for a game it will show your completion under 100% so it kinda encourages you to purchase DLCs for high completion rate...
Sadly my GTA4 and MLB09 0% is dragging my overall completion rate down ( and F.E.A.R. 2 2%..)