Maybe theres much more to the game than just champion mechanics. Theres mechanics like csing, wave manipulation, trading and trading in regards of wave manipulation, then theres macro, decision making like map movements, roaming, matchups, positioning in teamfights, reaction time, positioning in lane, lane priority, freezing, ganking, setting up ganks, warding, game knowledge, jungle routs and doing them efficiently..... and a million more. A fucking soraka that only w in lane sitting behind her carry is a useless iron 4 garbage, comparing to a challenger playing her positioning, trading, wave manipulation help and understanding only in a mechanical way.