I think RDJ is a great actor and has shown he act in past roles, but he's essentially become Tony Stark (or vice versa) now. He's become like Will Smith--shows up, does his "Will Smith thing", and collects his paycheck. Will Smith as Deadshot in SS was a ****ing joke. They just put Will Smith in an (incorrect) Deadshot outfit and said, "Go make some jokes. You know, something about white people, something about basketball, just 'Will Smith' it up a bit for us. Oh, your character? It doesn't really matter, but he loves his kid so milk that for whatever drama you can. Oh, and he'll kill anyone for money, unless he somehow grows a strong connection after 12 hours with a crazy white chick--then he throws his code out the window. Got it?" RDJ is doing the exact same thing with Tony Stark now except he's turned Tony Stark from a brilliant somewhat sympathetic character to an ******* no one likes because he's constantly talking ****.