That was truly....disturbing. The way the suit tried to slip so freely into Tony's persona. It was creepily accurate, and had Steve's lips twitching in distaste. It was wrong.
Tony wasn't some code that could simply be copied. And all the mannerisms in the world couldn't pull it off, no matter how hard the suit tried.
He followed after him, keeping a distrustful eye on him...it. He'd never really likened Tony's suit to a robot before now, but it's behavior was so strange that the suit seemed to adapt to Steve's vision of a robot quite well. The scary kind that tried to kill everyone and spoke with German accents.
"And what would those ideas be? Kill Lehnsherr, and have the team be just you and Wanda?" he scoffed, "You're not part of the team. You're an accessory to the team. You are the suit. Tony is Iron Man. There is a difference."