I understand that RDJ is a box office draw, but the Avengers is supposed to be an ensemble cast. that he got all that bread for Avengers compared to what they got. but to him if him holdin out for the others to make more money is true
This explains his cryptic answer to Jon Stewart's question on The Daily Show last week.
Stewart asked him about sequels and he hesitated...and then said we'll see and something about negotiations and getting him back.