The WAR rotation does not line up with a 2.5s GCD at all. You need skill speed for a 9 weaponskill Berserk/Inner Release Window without cutting into your GCD (that has been the case since 2.x) and you need even more skill speed if you want to double weave Inner Release and Berserk. The amount depends on your latency.
And seven FCs is a damage loss no matter what.
