Optimus too is surprised when Ratbat leaves, but doesn't allow it to show; instead he watches the mech's back until he vanishes into the crowd, before turning to Cliffjumper with an arched brow.

"I have to agree. I don't know what he wanted, but I didn't think he'd give up so quickly."

Which...probably means he got what he came for. Whatever that might be. Intimidation? Cliffjumper did seem a bit rattled, but that was about it. The lack of conclusion only made him more wary, and he increased his scans of the crowd.