I really don't see it making much of a difference since it doesn't change the one button spam, especially if we're saying they should be the exact same otherwise.

PCT, PLD, and DRK's all also differ in potencies per step, but that only works because PCT and PLD have ways to adjust what step of the combo they'll be at when buffs come around, while with DRK it's exclusively used as a burst tool like PLD's Confiteor combo.