Telepath vs Sociopath
What doesn't respond to Quinn's remark at all, nor does he ask Libra any questions about this battle. Not because he's too mature, dignified, inexplicably aware of what's going on, or any sort of ridiculous nonsense like that, but because he's, well...What. His notepad was in his other suit, unfortunately, and he wasn't holding a pen or anything at the time, so it looks like everyone's favorite hitman will be completely mute for this little showdown.
Mute, and wielding Thor's mighty hammer, Mjölnir. Oh ****, he's brought out the hammer this time. Good luck, Quinn. You'll certainly need it.