Level up Onyxia PVP skill

Im an Onyxia player and these days I commited the sin of trying to do BG, just to found out that all Black Rock people that comes into the Horde just go full toxic mode calling us dogs out of the blue or believing themselves as a god send to teach us to do pvp (but then, they suck not doing a single good focus). At the same time, Onyxia people only knows how to cry because the Ally side is full of Black Rock people and automatic **** themselves and ditch the bg.

But the worst thing is, that yes, some of the Black Rock guys are good but not all of them; but when I inspected the armory, Onyxia people crying about BR being better, you find out they dont even have the pvp profession set, or they have full pve gear, or pve talents or they dont know how to even focus, so obviously a PVP realm will roll over you all day.

Even one today, a Shadow Priest cried me a river about he is 2 weeks playing his toon to grind set and in that time he doesnt have good gear, when I inspected the armory, he has no glyphs, his talents arent pvp nor pve (they are just a mess and all bad placed) and the set is a mix of blue and greens of item level 175-200....So how the **** in TWO WEEKS just by doing RHD or WG you dont even have ONE pvp piece? I know prices and rating are higher than normal in Onyxia, but come on, with 6-7 WG or 10 heroics you can buy a set piece easily, plus the weekly quests in WG you can at least buy the Medallion and he doesnt even have that....

Onyxia people isnt making an effort, they believe the Deadly will just fall out from the sky. So is it possible to turn off the Merc Mod from Blackrock people coming to Onyxia and let the Onyxia guys who actually want a challenge go merc into Black Rock bgs?

Im not a top player, but I made my effort to get my Hatefull/Deadly gear since day 1 just to go to bg to get insulted or seeing my team not even trying to play depending on how many Black Rock guys are in the other side. I know you can win all bgs, but sucks to lose all of them by having a team that doesnt even try, at least if im going to lose, I prefer to be a Merc in Black Rock and playing with a team that at least try