Gear difference Blackrock <-> Onyxia

Hi,

Since the new arena season where Blackrock realm starts in full deadly and naxx25 trinkets, it has become impossible for onyxia to even complete the daily battleground quest. The difference in gear is just way too big, not even talking about the 2000 gearscore players from icecrown u get teamed up with, and alliance is full blackrock team as always...

Can you please either:
1. Fix the matchmaking brackets properly, so the gear difference is not this big?
Or
2. Remove Blackrock realm from cross realm battlegrounds with onyxia. (Blackrock does not need cross realm when mercenary mode is enforced automatically anyways)