Iron Man 3 or The Avengers? Which will win in total life time Box office gross? Just passed Skyfall!

[S.T.A.G.E.]

Iron Man is the most popular Marvel movie franchise even though Iron Man is a second tier character.I think It will fall just shy of Avengers sales though. 1.35 Billion worldwide is my first guess. If it get past that it does have a chance to beat Avengers.