STR chars suck against cavalry and ranged but they are kings of melee.
Recently I've made 36/3 peasant using cudgel. Muffin was on his agi 1H/buckler alt (he was killing almost everyone in melee combat). I had 95 HP and 8 body armor. He hit me two or three times with his super fast sword, I hit him once with my 12 PS cudgel, knocked him down and killed him with another overhead while he was lying defenseless.
That is major problem with STR builds. You need 5-20 hits to kill them and all they need to do is to hit you once or twice. And due to messed up weapon hitbox, lag, lucky chambers etc. STR builds are able to kill AGI chars quite often, and not because they were better opponent.
Smart players will simply abuse animations and the fact that chambered weapon speed is similar for all builds. Hold your weapon, block few attacks of an AGI whore, wait for your chance and release it, killing him with one blow. GG.