Is PVP good on Icecrown?

Hey,
Currently im on Outland, but played too much there, i was thinking i'd try out Icecrown
I have 0 interest in PVE. So my question is, is it a good idea to search for fun in Icecrown PVP?
Is balance similar to TBC PVP or is it fuked up a little because of some reason? What kind of PVP do players mostly do? Bg, Arena, World pvp?
thx

Go for Blackrock, you won't have to level up or farm low gear and all of WOTLK PVP is now cross realm so you'll get in the same bunch as Icecrow/Lordaeron players.
If you'd like to do world pvp you gotta go IC and level up, if you can live without that then Blackrock is the way to go.