How is it any more broken then the other 2? Or the one handed versions for that matter. Armor penetration only comes into play when an enemy has a significant amount of armor rating in the first place, which none of them do (No NPCs have any perks in armor skills, leaving their AR always so low mace perks done matter). Critical hits are worthless as well, since crits only apply to the base rating of your weapon, and never factor in damage enhancements such as enchantments and perks. At this point, its not worth taking ANY of the weapon-specific perks. I wouldnt even take critical shot in the archery tree if it was required to access higher lvl perks.