You didn't really miss anything. There was a cool trailer for Injustice: Gods Among Us and a Dragon Ball Z Budokai HD Collection was announced. Maybe there was some other stuff but I didn't follow it that closely.
I like the announcement that Guardians of the Galaxy will be in Marvel movie Phase 2. Pumped that Captain America 2 will feature Winter Soldier. You can look here for some more exciting stuff that happened. http://www.comicbookmovie.com/comic-con/