In the recent Original Sin #3.2 we saw what happened to the Hulk when Bruce Banner used Tony Stark's Extremis to modify his transformation. Possibly the best end page of the week. So, you know, Spoilers.
There we go. We got this:
So, you know, it has potential. Well, Marvel have confirmed what's going on behind Superior Iron Man.
"He's self-obsessed. Cunning. Superficial. Superior," explains writer Tom Taylor. "He has given Extremis to the people. Extremis can now be downloaded as a mobile app through any smart device in San Francisco and this creates Tony's idea of a Utopia, which he is very happy to be at the heart of. But not everyone is buying Tony's Paradise.
Which may explain why folk are so happy below… but not so much the She-Hulk.