It's a hard pill to swallow, admittedly. Literally no-one would immediately figure the situation out. Maybe if Sentinel wasn't devoid of empathy or intent on picking on this guy for no reason he'd be warmer and actually helpful.

"I could give a frag if you believe me or not. You'll hear the exact same from anyone else you're fortunate enough to walk into."

Optimus does raise an interesting point, though. Where are all the corpses? Oh, well. He expects this guy will probably just walk away soon. Might as well give him a heads up like the Best Prime Ever he truly is.

"There's more than one Megatron. It's delightful."