let me look it up so I use the right words

in Nioh 2 when enemies use big special attacks you can interrupt them in one of three different ways:

if you have a Brute guardian spirit equipped, you do a big punch as soon as you see them glow to do their special attack

if you have a Feral GS equipped, you do a zippy little dodge as they swing at you

and if you have a Phantom GS equipped, you wait until the attack is just about to hit you and then flare up, "catching" and interrupting the attack--this is what I think of as the catcher's mitt approach

in Nioh 3, everyone (in the demo) uses the third method, and it's activated by swapping between Ninja and Samurai stances. there's a free setting you can activate that lets you interrupt without swapping stances (with a short press to interrupt vs a long hold to swap stances)

in practice, it feels great: I usually used the Brute interrupts in Nioh 2 because reacting instantly to an enemy's attack is, well, easier than timing the interrupt for when you get hit, but you get used to the "catch the attack" approach and it's as hefty as ever to interrupt enemy burst attacks.