"Think so?" He murmurs, watching her reload the weapons. "Gotta admit I like the idea we could be comparable."

That's Han's attempt to sneak in a subtle flirt. In a lot of respects he feels outclassed by her, though. He's ... trying to shake off that feeling. To lack confidence is one thing, even Han feels that sometimes, but he doesn't have to show it.

"I could watch you move for hours."