"They do?" That was news to him. From what he remembered on how Ross worked, the man would dig through any town Bruce was even hinting to be in. He had been expecting to see the man since he 'Hulked out' during the battle. Had Natasha been telling the truth when she said SHIELD kept people off his back? Possibly. Did he fully trust that? Hell no. "That's good, though I doubt 'hero' is how I would put it either. That's all on the Other Guy."
And if the government was off his trail, that would surely end if he stuck around New York and Tony Stark. Who knew when his patience would snap and he'd go break Harlem again. Or Manhattan. Why not Boston next? Still, he returned Tony's grin; the man's enthusiasm was almost like a drug.
"Science bro? I'm sure, with enough time, Cap can become that. He's a fast learner, right?" Bruce had no idea where the words were coming from, but that had been a (terrible) joke. What was it about SHIELD and Tony and the others that brought this out? His quip about Loki growing on people had been his first in years.