Do top WAR use Fracture?

[Alistaire]

fracture has a potency of 300 as a WAR. Not 220.

This really needs to be corrected. DoT ticks from physical skills do not benefit from their damage type debuff. Storm's Eye/Dancing Edge in this case.

So for WAR, the initial 100 potency is really going to be 110. Then 10 ticks of 20 each for 310 total.

This is important because if you compare it to Butcher's block, which starts off as 280 potency, is actually going to be boosted to 308 unless you've made a mistake and let your debuff drop. So you can't talk about your skill potencies and compare a straight hit to a hit+ dot without considering the slashing debuff because it skews the comparison.

Fracture is not as much a dps increase as you'd think, partly because of that and partly because of keeping your buffs up.

So as MT, most definitely not. As OT, if the stars line up perfectly you need something like a 0.3% dps increase but if not, in most cases it's a loss.