They've never really gotten poise quite right
DeS - just hyper armor frames on some heavy weapon attacks
DS1 - poise lead to walk through attacks to backstab abuse
DS2 - The existence of the stone ring, and some fast weapons with absurd poise damage for their class such as warped sword and broken thief sword making poise worthless. The slow/weird hidden regen poise bar.
BB - back to just hyper armor frames on some trick weapon attacks
DS3 - the current mess
The best thing DS2 did was at least slow down your movement if you poised an attack, so one could not abuse it for a backstab as per DS1. That's probably all they needed to do to fix the legacy DS1 poise system.
The only thing one should count on is that the release code has a ton of bugs and fuck ups, and patches bring much better order. That's been the standing history of Souls.
Hell, they even brought back the weird facing vector you get when using the Force spell, that they had actually fixed and made physics sense in DS2.