Problem Trumper

When you tell them about a problem of yours, this person makes no effort to comfort you but counters with how a problem of theirs is more severe

Guy 1: Man, my guinea pig died last night.
Guy 2: Dude, that's nothing. My dog died relatively recently too, how shit do you think that feels?
Guy 1: Man, you're such a problem trumper. And something of a prick really