Weapon Attack is worth more than Luk in the Triple Throw equation, so Low-DEX Night Lords beat out DEXless night Lords. My friend did a test at BF against a Dexless, he killed it faster than the Dexless did, and he was 4 levels lower. Neither used Apples, they were both similarly funded.
So yeah, unless uberly funded, Dexless loses to Low-Dex upon hitting 120, and will own them even further when the HT Pendant gets all three Dragon Eggs.