He rolls his eyes at Tony's remark about judgement. "Spend less time in bars and I'll judge less." It's still playful, though, rather than any sort of serious conflict. Tony drinks too much, it both worries and frustrates him, but this is just teasing familiarity and sort of testing to see how familiar.

Since that look at Hydra being mentioned tells him that more than a missing arm is probably different. Might be time? Maybe.

But both differences and similarities and that look all get him circling back to the meatier part of that conversation. "Oh yeah? How about we see if we can find somewhere to show me just how many perks it has."