[FartyMcFarter]

Same here, it also overestimated my rating by about 300 points. To be fair it was just one game, so that's already pretty impressive.

Nitpick: "20% higher" doesn't work when talking about Elo ratings, since it's a system based on rating differences between players (i.e. subtraction).

In particular, if two players are ranked x and y respectively, that's equivalent to them being ranked x+k and y+k for any value of k. On the other hand, multiplying ratings by a constant has no meaning.