The shifting didn't get Quicksilver very far and the only move Iron Man made was the slightest tilt of his head to follow him. It wasn't Brotherhood information he was looking for; anything that came out of the kid's mouth would probably be a lie or at least rendered worthless on telling. Instead, with a sympathy that was perhaps incongruous with the unforgiving hardness of his mask, Tony said, "Tell me about your legs."
One day he might understand the twins' relationship with their father and their life on Genosha, and Tony was sure that was a long way away. He had to start somewhere, though. These two were important, enemies or allies, and Tony was more than ready catch up with their complexities and run at full speed anymore.