Wotlk:
Highest Rating on Preg 2v2: 3353
Highest Rating on Disc 2v2: 2900
Retail:
Highest Rating on Priest, 3v3: 3245
Highest Rating on Paladin, 3v3: 3101
Highest Rating on Hunter, 3v3: 2807
Highest Rating on Monk, 3v3: 2604
Highest Rating on Feral Druid, 3v3: 2640