A raise of an eyebrow. "You're griping about it like you're ninety. You can't be that much older than me, are you?"

They're keeping the conversation civil, albeit through loosely bared teeth, because Luther's frankly not sure what to do about it. His instructions and parameters for the evening hadn't included something like there's a former enforcer here but he's being pretty benign, all things considered. He doesn't seem to be posing a threat to Gabriel or the other higher-ups, so maybe it's alright to let things be.

Then again, their particular powers mean they're at something of a stalemate. Matthew could try to telekinetically pop Luther's skull like a balloon, while Luther could try to teleport out of the way and get close enough to snap Matthew's neck. It'd be messy, no matter what happened and who wound up on top.

So. Best not to find out just yet.