Post game rating means nothing. It is just for fun. I never even look at it.
Post game rating vs actual rating
The gameplay rating is a quick and dirty attempt at guess the elo.
As you have seen, it is often wildly inaccurate.
The after game competitive ratings are as close to real ratings as you can get these days. In the olden days, the only ratings were for over the board slow chess. Those had some advantages, like controlled conditions and live monitors, but they also had some disadvantages, in that they were only accurate as long as you played quite regularly. When you hadn't played in a long time, they wouldn't adjust to reflect the natural decline in skills when you don't keep them up.
Nowadays, everyone has multiple online ratings and few people have over the board slow chess ratings. Figuring out a "real" rating is tough.
But the gameplay and bot ratings just confuse things further.
Hi all,
I often get a 'gameplay rating' of 1100 or more but I can't break 500 for my chess.com rapid rating. I also score higher on puzzles. I think I get nervous about halfway through games and then make some stupid mistake that I can't recover from. I'm also winning against 1400 bots but I realize those are just computer matches. Does the rating that you get after games actually reflect your true rating if it is pretty consistent, or is that just a fun number to think about?