The biggest difference is time, I think. You guys all started kind of... late, I guess. And twenty years is a long time to be doing something. It can change people.

[This is a pretty morose topic, though, so he doesn't say any more than that. He's already got Tony's promise that the civil war won't happen, but if everyone forgets, it's kind of a pointless reassurance, isn't it? And the same goes for warning people about SHIELD.]