[poppsywoppsy]

I don't think Sam is quick witted enough to be sarcastic or bitchy, the moment is over before he realizes what's has been said.

He has to work things out in his head to react but misses the moment. This makes him seem nice but he certainly had a plan for a showmance before he went in and it wouldn't have mattered who it was with. He was fortunate he went in later or he wouldn't have made his mind up on who to pick.