Arcee almost makes a comment in argument -- that this isn't the first time Autobots have met Decepticons on a planet inhabited by another species -- but she decides against it. It doesn't exactly make them look any better.

"If you manage to work something out with them, let me know," she says, a little shortly. She can't help but feel that Legion's wasting their time. "Good luck dealing with Megatron -- and watch out. He can be tricky."