Rating Distribution

I am rated around 1400, but the percentile ranking is 87th.  1400 seems just a bit over the average of 1200, but 87th percentile sounds like a much better rating than average.  I'm not sure which to believe.  If this is a normal distribution, then it implies that about 75% of all players are in the 1000 to 1400 range.   That is a very tight range. 

That is the Rapid time control distribution and my ranking. There are a large number of players between 1000 and 1400.

Back in 2014, chess.com adjusted the ratings for average players like myself.  In my case they added 150 points from 1350 to 1500 to try to make ratings more representative.   I wonder if they do this occasionally if the distribution gets skewed.

Maybe. Though, the current site also allows players to choose their starting rating level. That quickly changes when the players actually play a game, and I don't think that initial rating is ever reflected in the distribution, but with Glicko those likely converge more quickly than they did when everyone started at 1200.

I imagine that has some impact as well.

Has anyone else noticed that the Rapid average has dropped from 1126 to 812 in about 3.5 years?   My rating had dropped although my percentile ranking has improved.  What does Chess.com think an average amateur shoud be rated at ?