Robert Downey Jr is set for another huge payday from a mega-hit Marvel movie, this time Iron Man 3. I’ve learned he’s already made $35 million from the actioner which grossed $680 million worldwide in its first 12 days. He should exceed his biggest payday to date — that $50M from The Avengers which I’ve learned was more like $70M-$80M now that the film is all in. But it’s really Avengers 2 where he’ll clean up big-time — if he wants to reprise the role. He’s hinting to some media it may be time to retire Tony Stark. And saying to other outlets that Marvel better show him more money for Avengers 2. ”I don’t know,” he said on The Daily Show. ”I had a long contract with them and now we’re gonna renegotiate.” (“You are Iron Man! You are!” cheered Jon Stewart.) I’ve learned that Marvel and therefore owner Disney are going to run into big trouble on that sequel because the upfront pay, backend compensation, break even points and box office bonuses aren’t pinned down yet for several big stars and castmates. This is major hurdle which Walt Disney Co Chaiman/CEO Bob Iger hasn’t even mentioned to Wall Street or shareholders although he’s already been hyping Avengers 2 for more than a year now.