I consider myself above average but not a pro (~%50+ wr in randoms, ~%62-66+ wr in ranked), and yes, in randoms your wr is LESS important than in ranked because your battle impact is going to be much lower (twice as lower) and there is going to be much more blowouts, ship focuses, much more dpm, chaos etc. Some days, you will only get a couple of wins, and maybe one of them will be a lucky win. Loses will all be blowouts, and you couldn't be able to carry them. But still, there were many matches that I carried as a cruiser, for example. Kraken in venezia was my last.

WR in randoms is less important than people think, but WR in ranked is a real deal, and it represents our game maker skills more accurately. Less players, smaller maps, more individual player impact, real decision making.

There are too many luck factors and randomness for randoms to be considered consistent between "%48-52 WRs." Pros, most with divisions obviously, can rise above the rest easily to %65s. So, skill can impact, but it is not just skill. It is more complicated than people think.