>>3 Couldn't have said it in a more trite and non-contributing way.
Honestly though, I do hope they don't lose momentum from making so many Iron Man movies. I understand however that, as the most famous actor amongst the main group (barring maybe Scarlett Johansson) Robert Downey Jr would understandably get the most attention, so it isn't really surprising.
If the lineup I saw a few months ago is to believed, I think this is the last Iron Man movie until Avengers 2, so at least they're hitting a stopping point, for now. I've heard some people had gripes about Iron Man 2, but I never really had high enough standards to deny watching another Marvel movie for any reason. They've just been generally well made thus far, so I trust they're going in the right direction still :V