Decent write up with comments from Adam Gershowitz of EA Mythic
Nice summary of who the rock-paper-scissors of the careers in RvR will go
Tanks (Black Orc, Chosen, Blackguard, Ironbreaker, Knight, Sword master)
* Strong Vs Melee DPS
* Even Vs Tanks / Melee Healers
* Weak Vs Ranged DPS / Ranged HealersMelee DPS (Choppa, Marauder, Witch Elf, Witch Hunter, White Lion, Hammerer)
* Strong Vs Ranged DPS / Ranged Healers
* Even Vs Melee DPS
* Weak Vs Tanks / Melee healersRanged DPS (Shadow Warrior, Bright Wizard, Engineer, Sorceress, Magus, Squig Herder)
* Strong Vs Tanks
* Even Vs Ranged DPS / Ranged Healers
* Weak Vs Melee DPSMelee Healers (Warrior Priest & Disciple)
* Strong Vs Melee DPS
* Even Vs Tanks & Melee Healers
* Weak Vs Ranged DPSRanged Healers (Archmage, Rune Priest, Shaman, Zealot)
* Strong Vs Tanks
* Even Vs Ranged DPS / Ranged Healers
* Weak Vs Melee DPS
Hit the jump for the entire article. Be sure to check out part 1 as well.