I'm one of 3 (maybe 4 now?) 50's on my server. But the *only* one that actively pvp's. When I queue, I have a group ofr 4-6 people that are all between 19-36.
We don't have vent. Only ops chat/party chat. We understand how the game runs and we have strats for a number of different scenarios pre-set.
Just because a lvl 50 or group of level 50's are in a huttball match together does not mean they will win! It's a matter of team effort and strategy. You get 3 to 4 people that understand the game and how it's played and you can run the map no matter what level you are.
PVP gear certainly helps - But it's not the *LEVEL* of the player that's ruling the game. It's the ammount of coordination between the players that does it.
Edit: Should also note that the people I queue with I met entirely *IN* random solo-queued huttball matches. We all realized that we played well together and got *&^@ done so we just started grouping together so that we didn't have to go back and forth eating each other alive randomly. Though...sometimes it is fun to destroy a friend in a cross-match >.<