It's ridiculous how easy it is to play STR build. Just look at all the robocops, taking 6-7 hits before dropping while they 2 hit everyone else.
you need to be able to hit to kill ppl; and having lower ath/wpf requires by far better positioning and leave you by far less space for footwork errors. 7ath and more just let you jump around like a crack ninja with a greatsword even in medium/heavy armor, still dealing some insane damage tnx to speedbonus.
easy solution: make greatswords/top tier 2h/poles require more STR. You want run like Bolt with a 2h? fine, but you have to stick with a low dmg weapon. Don't even get me started about weapons with 12 STR req, 43 cut DMG and 96 speed.
STR build may have higher potential in the hand of a skilled fighter, but a very average player can make a skip the fun char in medium armor with a danish or a GLA , go 15(or16)/24 and rape like a boss.