I agree with Iggeh that lead BellyZard is a serious menace (when i used to lead with Smeargle in UU i was fucked over by it a few times). However...I'm not sure that the set is different enough to warrant a new analysis. I would just mention Life Orb in the set comments if you were planning on using it in OU, and also that Charizard doesn't always have to wait until lategame to pull it off.