I feel the problem is not so much posture rushing, but that from what you've described, you can pretty much control their response as the only way for them to escape is to parry back and attack, at which point you parry them free and repeat until dead.
One thing that would partially save it would be if their attacks were insanely hard to parry. In that case it would be no worse than Onimusha, where some are easy, but later enemies are harder and riskier. I've haven't reached the first boss yet so my only exp is with grunts. Do parries against other enemies get tougher to do? At least we could say we practiced and learned the timings to get to a point where were can rush them down and parry with no trouble.
I'm guessing the majority are awful at parrying.
One thing that would partially save it would be if their attacks were insanely hard to parry. In that case it would be no worse than Onimusha, where some are easy, but later enemies are harder and riskier. I've haven't reached the first boss yet so my only exp is with grunts. Do parries against other enemies get tougher to do? At least we could say we practiced and learned the timings to get to a point where were can rush them down and parry with no trouble.
I'm guessing the majority are awful at parrying.