How much stronger are STR shads compared Dexless LUK shads?

Str shads are stronger by a wide margen after 15x+. That's when poison stab is maxed and really takes affect. So I've heard

Hmmm? Venom is based on LUK and STR equally with DEX as the secondary. The STR they put AP on is won by giving up LUK, the extra STR they get from stuff like zhelms and the likes a LUK shad gets too.
The real reason as to why STR shadowers will beat LUK is simply because a decently scrolled Dragon khanjar blows a godly maple shield out of the water. STR daggers and the blade shields also look a ton better than the LUK ones and the really ugly maple shield.