All tanks have lost about 30% of their damage in PvP post 3.2 (estimate)

[Lambdafish]

The point of the tank balancing was to bring the divide between tanks damage together, and lower the Base amount so that tanks don't get confused about what their job is (no other job is required by the community to fill two roles). Yes it sucks for War that they are slowly being pulled off their throne, but the changes are healthy to the tanking meta.

In pvp specifically, War was a job that had decent damage and couldn't die easily, there has to be tradeoffs