Regardless of whether it's 950 or 1000, the basic facts are that you'll never overtake the damage of a fracture rotation for any length of fight (assuming fracture runs its full duration).
After X seconds in a fight, you'll have spent Y TP. Y is equal to (1000 + 20X). At any value of Y the amount of TP you have available to have used on skills is the same regardless of which rotation you're using. The amount of damage you'll have done at any point in time is 3.05Y for non fracture and 3.12Y for fracture rotations.
The only time this value isnt exactly on is when you consider rounding up to whole numbers of skills, which might mean having to wait an extra second or two at the end of the time comparison for full GCDs. But that's only going to create a variance in potency of less than 1 GCD over any length of time, as it only takes 2 GCDs for both rotations to regen enough for one skill.
And if starting with 950 (for whatever reason), the number of GCDs you have is 950/14.4 and 950/15.6, which is 65.97 GCDs to bottom out for non-fracture and 60.9 GCDs to bottom out for Fracture. 61 vs 66 is a LOT different to 60 vs 72.
Your math is wrong.
I don't disagree that fracture doesnt make a big difference. It's 3% increased damage if you use it. It's a threat loss if you use it. But it's still an increase. 3% is significant in situations where you're trying to minmax a rotation. It's fine to recommend that people don't use fracture much, but it's -wrong- to say that it's a DPS loss in any sense. It isnt. No matter how long a fight or how you manage your TP, including Fracture will always result in more DPS than a non-fracture rotation. Not by much, but not LESS.
The main use of fracture is the fact that it's frontloaded into one GCD. Take Berserk - 20 seconds lets you fit 8 GCDs of attacks in once you use it. You CANNOT fit in 3 full three-hit rotations. The optimal way to make use of berserk is to pop it after either a Maim or Skull Sunder, so the damage affects the Storms/Butchers, do two more 3-hit combos, and have a spare GCD. In this situation Fracture would be the obvious button to hit as you'd be boosting a single 300 potency GCD by 40% instead of a 150 potency heavy swing or 200 potency skull sunder.