Clark noticed the fact that the man was ready for a fight. Clark didn't plan on starting one unless he had good reason to, whether that be because this man decided to start a fight or if this man decided to harm the innocent. Though, he was quite sure that he could easily take this guy, as far as he was concerned The Batman didn't have any superpowers, but could have been because nobody's been able to report about them. He did have to be careful, but unless this guy knew about his weakness there wasn't much concern when it came to a fight. Even if this man did know about his weakness it wasn't like he had a chunk of kryptonite at the ready, not unless he was Lex Luthor, who seemed to be the only human being that carried around green kryptonite. He was almost positive that he'd win in a fight against The Batman, there wasn't really much stopping him from picking this guy up and bringing him to jail right now. It wouldn't be that hard with the superstrength and the ability to fly.
He wasn't too happy with the man's attitude as well, the body language showing that the man was ready for a fight, the way he spoke wasn't exactly welcoming. It wasn't like Clark was expecting the man to be extremely welcoming, but he was quite sure that this man already saw him as an enemy, which wasn't something he liked. He may have just gotten used to being treated like a hero everywhere, but either way it didn't make him too pleased to find out that this guy was all that pleasant to talk to. It made everything seem like this man wasn't really understanding the idea of being a hero. The public looked to them as idols, whether they liked it or not. This man was going to influence the way other people acted, and Clark was rather disappointed that it seemed like it wasn't going to be good for the people that idolised The Batman. That wasn't something Clark really needed to focus on right now though, there were more important factors to being a hero that did matter more.
"I came by to check out the new hero," Clark shrugged, finally figuring out an answer to the question. He couldn't just blurt out that he wanted to make sure that this guy was actually a good guy. Though, he was pretty sure that could be gathered by what he had just said. He couldn't cover up everything that he was doing, that'd be unfair and also a complete lie. He wasn't the best a lying. "I was hoping to see you in action, rather than meeting like this," Clark added to his already terrible explanation. He needed to talk to Lois about better ways to interrogate people. This already wasn't working out too well for him.