Sorry to tell you, but you're wrong. Go look at class sims for DPS specs. Most respectable sites will list sims for differently legendaries, and the good ones can be
significantly higher than the shit combos. You also (incorrectly) presume I don't know how to deep-dive into logs and look for things like buff/debuff uptimes, spell choices, damage windows, etc. But hey, if it makes you feel better about your play to think that having the best legendaries have nothing to do with it, more power to ya.