I have played 9 games against one player this month, and won 6 of those games. Yup - 67% win rate against them. Still, I have LOST a net total of 127 points.
How is this a ranking system? Beat a player 6/9, yet lose rank.
If ZOS doesn't want to change our ranking system, perhaps they should make the other battlegrounds have the same randomness we have. Imagine doing battlegrounds where you get to pick your class and alliance, yet all your gear and spells will be random.
Recognize the RNG of our game and design the system appropriately using series matches as the baseline.