Another major difference is enemies recoil from hitting greatshields a lot less now. While before you'd only need to block one attack for a sliver of stamina and then they'd reel for 2 seconds, now you have to block a whole 3 hit combo. If you get 2-3 enemies doing that you simply have no openings and they'll wail on you until you're out of stamina (which won't take long.) Also, being out of stamina effectively nullifies your poise now, which makes losing a ton of it to blocking even less useful. Especially since the weight of your shield + armor slows your recovery too. Lastly, lots more enemies have grapple attacks (including bosses.)
Dodging is just way more viable this time around, comparatively.
a lot less? maybe on mediums, but on greatshields even the ruin sentinels (at least the mob version in the castle) and the pursuers (the non-boss version. haven't tried doing Old copypaster before pursuer) recoil from my tower shield (one of the first greatshields you can get. the first with 100% physical iirc) on their first hit. and poise is useless, it might as well not be there. it's pretty much like DeS, but worse because there's no hyperarmour now. my str/fth build laughs in the face of pretty much all PvE attacks with a simple tower greatshiled, gyrm and a rebel greatshield. they may have nerfed the stability a bit, but they compensated by giving tons of stuff with 100% elemental resists (either infused or normal). the best improvement is that now the shield with the best stability requires 45 str to wield (but it still has as much stability as Artie in DaS1), although they've gone way overboard with the resists on that one. the balance is different (and the balance of small vs medium vs great shields makes muuuuch more sense than DaS1), there's maybe a few more threats to your blocking but they're so easy to avoid they might as well not be there. btw, is there any regular enemy that can parry you? i've been parried only by skeletons, and i've heard Lost Sinner can parry, but that's about it.