Bruce lets out a sigh and pinches the bridge of his nose, but he lets Tony go. They're both too upset to let this carry on, and Bruce Hulked out not that long ago; he doesn't need to let the rage build up and explode on him unexpectedly again. Maybe with some time to let this settle between them, they can see each other's position a little better. What he's mainly concerned about, though, is Tony really understanding what Bruce means. He says he gets it, but Bruce isn't so sure he really does, underneath.