The only real problem was the tipped pass call. Since it so hard to prove a negative, the official on the field should never declare that a ball is tipped unless he is absolutely sure.
If the ball is truly tipped then the replay will show it. If the ball wasn't tipped, it's hard to overrule though.
Replay will bail out an missed tipped ball call, but it can't really be helpful on one that ruled a tip but really wasn't.