Be sure to check the spreadsheet linked at the end of the blog post for the real Elo-MMR ratings. 1999 is a mixture of old and new rating, because we wanted to make the transition smooth; admittedly this has caused quite a bit of conclusion. The reason this user appears to have inflated gains is that they already have a much higher Elo-MMR rating and, instead of showing it in one giant jump, we’ve allowed the graph to slowly catch up, by about 25% each time the user competes.
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