I've only left two warzones in my life intentionally. One was against an all 50 premade when we had like half a team in game.
The second time was recently and we had 3 level 10's & a level 14 on Alderaan. We didn't leave until we gave the game a chance, but once the game started and watched how they got stomped into the ground by a full 50 sorc premade... we didn't feel like wasting our time.
I'm a 43 Combat Medic with a 50 Vanguard partner, and also both 30+ valor Gladiators.
So before you want to give me a deserter buff for 99% of my leaving being a 5 second disconnect because bioware has absolutely ZERO disconnect protection, or every 1% avoiding a hopeless game, you should really think of other alternatives.