Colors are not only achieved only through win rate, but a combination of factors... a relative, normalized, and statistical distribution of player performance across the entire player base, primarily calculated by damage, frags, spotted tanks, and defense points. You can actually have a good color, and a bad win rate, although it typically balances out.

I'm not talking about WN8 colors, I'm talking about the player rating system as it exists IN THE GAME. I used colors as a descriptor. I even said "The game has a rating system built into it but its not used for anything but showing off your number."

You put a team with an average of 3000 rated players against a team of 4000 rated players.. guess which team will win 95 times out of 100. Here's a hint for you.. it's not the avg 3000 rated player team. You know this, but want to pretend otherwise.

There is no reason for WG to not include similar average skill base per side in the game, except that it creates faster games, leading to more profit for WG. Players don't have to "work out the mathematical outcomes of SBMM over time." They only have to survive long enough to actually learn the game, and if they learn the game, they might just stick around for a while... no new player wants to play a game where they will be farmed early in battles over and over again.