Chess.com and lichess use different rating systems, and give different ratings to new players. Chess.com ratings end up being consistently lower, but that doesn't correspond to you being in a lower percentile of players on chess.com (what parent was talking about).

For reference though, I'm 2000 lichess rapid, and 1700 chess.com rapid. I use chess.com as my "I'm not going to play well right now" site so it's a bit worse because of that, but mostly it's because of the difference in rating system/pool.

I'm 1500 lichess and approx 1250 chess.com

50th percentile lichess and 80th percentile chess.com

The Elo distribution is really different between them. I'm hovering around 1500 on lichess Blitz and 1100 on chess.com Blitz. I would say 1000 on lichess ~= 500-600 on chess.com.

who cares about absolute rating? no matter what the rating of your opponent is, it's all about the _difference_ between theirs and yours. It would have been nice to just have 1 number and one unit but it isn't. Now you have x on Fide, y on lichess, z on USCF, t on chess.com and w on fics. (for me it's 2000 Fide, 2300 Lichess, no USCF, no chess.com and 1850 on fics )

Lichess starts you out at 1500 vs chess.com's 1200. So the whole bell curve is shifted.