MoP Classic Best DPS Rankings

Phase 1 T14 Best DPS Rankings

These rankings are based on the top parses from private servers where the sample size is very small compared to Classic. Some specs are expect to scale very well into the late game such as Affliction, Arcane, Fire, Fury, and Beast Mastery. This also doesn't account for the DPS increase that Shamans and Warriors bring with Stormlash and Banner.

Phase 1 T14 Best Healer Rankings
Phase 1 T14 Best Tank Rankings

It seems tanks have the most flexibility out of all the roles. Guardian Druids and Protection Warriors are expected to scale very well into the late game, while Protection Paladins will scale well in the midgame thanks to haste.