Depends on the lobby. Some are the classic HC lobby where everyone sits in the back of the map. Some are run and gun lobbies that are actually quite fun. Even though it's easier to die in HC, the fact that it's also easier to kill and I'm confident I can out-aim many people also makes HC easier overall... for the most part.
I've recently discovered it's a great place for completing Bloodthirsty assignments and what not. If you're faced with multiple attackers in core, needing to deal more damage means you kill more slowly and give your enemies more time to kill you. Likewise, in core, people have more time to evade your fire while you try to get those longshot assignments done.