its 30c thats really weak. ps is inly good with higher damage weapons. 3oc is peasant damage the helm is what 56 armor. even your highest damage hit 30c wont be near 56 armor
C-rpg calculator:
27 str
9 ps
100 effective wpf
30 cut
1H
56 armor
Damage-
minimum: 5
Average: 15
Maximum: 25
and that's without the 20% headshot damage bonus.
The 1H sweetspot is the issue here. The blunt/pierce weapons don't have the same issue because they don't get nearly the same flat cut off the top of their damage from armor, however the cut weapons are gimped because of it.
Polearm sweetspot on the right swing is decent, not great, but useable. The other swings are a bit crappy.
2H has amazing sweetspots on all attacks, which is why they often seem faster than their speed rating would make one think.
1H animations have atrocious sweetspots. Hence why the users need to hit in the very best part of the swing, which slows them down drastically if they aren't using the left swing. This is why the right swing is so slow. You have to hit in the latter half of the swing, while with most weapons you hit in the very first 20% of the swing. Hence why 1H HAVE to spam leftswing. Their other attacks are slowed down drastically because of bad sweetspots.