Katana has the worst thrust of the entire game, not counting under 500 gold weapons. The studded warclub, you know that medieval baseball bat, has a 16b stab, while the katana has a 16p stab. Ever tried thrusting with a baseball bat? I'm sure the katana would do a better job then the warclub. Or the long iron mace with its 20b stab, these weapons are a lot less suited for stabbing than the katana which actually did a good job at stabbing.
That last nerf from 18p to 16p was just completely unnecessary. I would like to have the guy who thought of that explain it here. All I'm asking for is a 19p/20p stab on the katana. That is still a bad stab, but not as completely useless as it is now.
Also what Thomek pointed out, if exotic weapons cost more, be consistent and make chinese weapons expensive too.
Reading these topics I see much people agree that the katana is underpowered so I would like to see the devs do something about it.