Why You Shouldn't Use Fracture

[Sapphidia]

Coramac hits the nail on the head here, and made me realise what I'd also overlooked based on the complicated maths in the original post. At the end of the day, ALL THAT MATTERS is simply Damage-per-TP. You get 1000 TP to start, and you regen TP over time, independantly of what actions you're taking. Everyone has exactly the same amount of TP to play with over a fixed length fight. What counts is how you convert this TP into damage.

If it runs its duration, Fracture is 300 potency for 80 TP. That's 3.75 potency per TP for 1 GCD. A butchers combo of Heavy/Skull/Butchers is 150+200+280 potency for 70+60+60 TP, which is 630 Potency for 190 TP, or 3.3 potency per TP over 3 GCDs.

A 100 potency attack that costs 50 TP is exactly the same damage over a long fight as a 200 potency attack that costs 100 TP. Regen doesn't affect this efficiency. Just because the high cost one runs out sooner just means they frontload the same amount of damage at the start of the fight but still regen as much. In fact, the 200 potency attack will almost always be better to use because it gives you a "blank" global cooldown that makes it better for non-TP starved fights where global cooldowns are an issue.

Yes, Fracture is Low Threat. No, you shouldn't use it in situations where you don't have a nice threat lead.

But for damage? As long as Fracture runs its course, it will ALWAYS be better damage-per-TP than doing a Butcher's Block combo. The fact that you can only use it once per 30 seconds really, and can almost always ensure this clicks with a damage cooldown, makes it even more useful.