I had a lvl 90 Knight spear type that does not damage at all. Everytime I do Boss dungeon, I always finish it at C due to very, very low dps. The skills are nifty , I did the THQ skill tree up until the buffs and it did not made any change when I used spear type..
I think they should change Knight stat build ups. I did 100 STR and my damage to most mobs ranges between 100-250. The highest damage always came from my pierce skill which give the 247 damage total.
Plus I don't recommend the "RECOMMENDED" stat build in the game. Its not helping me git gud in the game. It made my knight look weak as a fly! I have had 11 stat resets for my Knight and I am running out of options here.