Prof for WvW
If you are overrun by a zerg you die in seconds, for that class does not matter. As for what class you want for WvW depends as much on your playstyle as any other part of the game. For all classes you have to runwith it for a bit to discover what the best way is to play that role.
If you like melee a class such as guardian (or thief) usually does well on hit and retreat. If you want to go more ranged enigneer or mesmer (or ele).
I’m a warrior as well, if you want some survivability you’ll need to invest in a tank build.. (google it)
You wont get super tough I mean, you wont be able to go against a zerg by yourself but if you play well you may be able to win against 2..
and in massive battles you’ll be able to get advantage of people who get too close to your defense/attack line but mind yourself not to do that as well.