Merging PVP on Lordaeron is like mixing 1x blizzlike with fun servers and I will tell you why:
Icecrown: plenty of donors with BIS gear, eazy to farm ICC, easy to level up, etc.
Blackrock: FREE pvp gear 5.5 minimum, very eazy to get BIS HC items due to no raids, just rating
Lordaeron: 1x lvl rates, takes you one month to reach 80, PVE difficulty increased, ICC nerf (no buff) and higher HP and lower berserk timers. It is quite hard to gear up since PUGS don't go more than 4-6 bosses. In order to have decent gear for arenas, you still need some hc PVE parts, but it's really hard to get even normal parts, and you thought to merge everything together for more competition? A guy on Lordaeron needs like this: 1 month to lvl up, 1 month to gear for ICC, 2-3 months to get decent pve gear (at least), and GOD knows how long to get HC gear which everybody has it on ICECROWN and BLACKROCK. Another thing is that ICECROWN was way older than Lordaeron, it is obvious that most of the players there already got the gear and the Lordaeron people don't.
The arena situation is similar with the BG, naked people vs BIS people. Even with full furious, BG geared it's almost impossible to get the rate, unless you are very skilled and one of the members has the gear.
SOLOQ: I've been playing rdrood for years, achieved high ratings, both Blackrock/AT and other servers, but here... because of people who join and their mixed gear (either naked, either BIS) without talking about their skill set, I have done 150 matches and I am still stuck at 1.3. (Considering the fact that I have 2.3 SOLOQ pala on blackrock from last year, SOLOQ nowdays it's a waste of time and nerve.
Conclusion: PVP on Lordaeron is aids, either you get boosted and try hard or you do PVE.