Ultimate Dexless Infighter Equips Guide

I really don't understand these forced dexless builds.

I mean, say you have enough dex to equip your level 60 overall, and you make it 20 dex so you can use a level 80 knuckle..
Couldn't you just add 20 points to dex, grab a level 80 overall (which comes with more str), and make it 20+ str? It'd achieve the same result, and be cheaper too.

this is true, but you're forgetting about the extra str you'd get from MW by having a higher base str