You obviously don’t know what im talking about when i say WoW is primarily CPU limited.
Resolution does not matter for the CPU.
Also lowering the grfx settings will hardly improve your min FPS, if at all.
Remember, i am not talking about 60 FPS in LFR where half of the players are afk or pressing one button a minute.
I am talking about the real stress test in a 20/30/40 man raid with players who are actually playing their char properly and thus increasing the amount of entries in the combatlag drastically.
Even with the fastest gaming CPU (the 9900KS) you will not get 60 FPS all the time.