I don't pvp myself but it seems like the only pvp going on is warsong gulch 2v2+, rank14 is easier to grind because of low pop and I think rank decaying is nerfed(?) not the best server, I guess, if your main or only reason to play is to pvp. Fun server for pve or leveling tho.
rank14 is easier to grind because of artificial bloating of the PVP pool, if this would not be the case rank14 would not be available because of the low pop. Rank decay is not nerfed, but you need only 1 kill to get drafted into the PVP pool instead of 15