Twiz
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If they predict you're going to do it Pyrrha gets a free 4B.Oprah can DNS K or CE punish bA on block. 4AB → DNS B will work on whiff.
Pyrrha's options are shittier. She gets 6BK/CE on block and 4A series on whiff.
No disrespect intended, but I think you're overselling bA a bit. Most characters get a pretty strong punish on it due to it giving a free CH—even shitty/low damage punishers get pretty good damage on it for the most part (Aeon gets 4B → 66K/6B BE, Asta gets 6AA, Raphael gets 6B BE, Leixia gets AA BE, Nightmare gets CH 6K, et cetera). I see it as being similar to Nightmare's GS A. Both give great damage in the right circumstances (bA aGIs something, GS A gets a CH), but are also unsafe, high, and prone to a generalized form of counter (highs/lows for bA, horizontals for GS A). It's a useful niche tool and a handy aGI to have, but not something to orient an entire playstyle around.