[Steve frowns deeply. It's too hard for him to imagine Thor, his friend, as a man without any mercy at all. Even with the amount of times they fought Loki in the past, Thor hadn't been a man who was beyond any feelings for his brother. And that Loki had been more dangerous as well.]

You're right about one thing. That isn't the Thor I know. I don't believe that Thor would deny anyone a fair fight. You said that something Fury said changed him? Then he must have done something to him. And that means trouble for everyone.