I'm gonna quote a good old movie.
Eric:
Dog, we've been up all night. It's no one from round here.
We've had them all lined up against the wall.
If he was a toe-rag from out of manor, we'd know.
SWTOR PVPers:
You'd know? You'd fcking know?
You wouldn't know if it was the next door fcking neighbors!
FACT: At least 2 of top-3 sorcs,1 of top-3 operatives and 1 of top-3 guardians are win-traders in season 5. Now they are champions of sorcs, operatives and guardians lol. Grats.
P.S. If Eric wants to know how they are able to win every single arena I can explain. I'm not gonna say that in global chat here.