Battlenet was the original user forum of Overwatch, running from the game’s launch in 2015 to sometime in the late 2010’s. I allege that on the Battlenet forum in 2016 Scott Mercer, Lead Designer of Overwtch, made the following statement about the SR/MMR system:
"When the matchmaker creates a match, it determines the % chance for each team to win based on the match it made. The VAST majority of matches are usually near to 50% (especially if you’re a player closer to median skill rating and you’re not in a group). When we do put you in a match that we know isn’t a 50/50, we adjust your SR gain or loss based on your calculated change of winning.
"We model the synergistic effects of players being together in a group. Based upon the data we see in groups, we predict the win % for each team. We try to match similar sized groups together.
"The amount of MMR (and SR) you go up or down isn’t simply a matter of whether you won or lost, and what was your predicted chance of winning. There’s a couple of other things at work. One is the matchmaker’s confidence in what your MMR should be. Play a lot of games, it gets more certain. Don’t play Overwatch for a while, it gets less certain. You go on a large win or loss streak, it gets less certain. The more certain the matchmaker is about your MMR, the less your MMR will change in either direction based on a win or loss.
"We also do evaluate how well you played the heroes you used in a match. The comparison is based on historical data of people playing a specific hero (not medals, not pure damage done), and we’ve done a lot of work to this system based on the community’s feedback.
“While it’s a minor factor compared to wins/losses (The best way to increase your SR is still to play together and win as a team!), doing so does help us determine your skill more accurately and faster.”
For 5 years, I have campaigned against algorithmic handicapping in ranked online competition on the basis of these words from Mercer and what they imply. I am asking for the Overwatch community’s help in verifying the fact of Mercer’s statement. My critics have attacked me for being unable to link to Mercer’s statement or substantiate it in any way, and they’re right. Players deserve to know the truth, so please help me prove it. What I need is nothing less than the entire Battlenet archive. If you have it, contact me!