Blitz is my weak time control (I'm better at bullet and rapid and longer...) But I agree with you, I easily got 2300 in classical on lichess. Playing casually and winning on lichess blitz is like walk in the park as you said. But I mostly play tournaments on lichess and idk why I'm much worse playing in lichess tournaments so I lose a lot and my blitz went down under 2100 lol
2000+ blitz players : chess.com vs lichess !? Do you feel the difference !?

I remember a thread where someone did a ton of research to get as close to an accurate assessment as possible of the difference in rating between both. It's basically anywhere from 160-200 point differential between both sites, with chess.com being the harder one of course. My highest blitz on lichess was 2225 and my highest in blitz is 2003 on here ( i probably could've gone a little higher, but I switched to bullet now). I think it's about a 180 point difference.

Up to 2200 it's a bit easier on lichess but in the 2300-2400 range there is no big difference
https://chessgoals.com/rating-comparison/

Similar I am 2000 in bullet in lichess but only 1700 in chess.com but I am nearing 1800 nowadays

Up to 2200 it's a bit easier on lichess but in the 2300-2400 range there is no big difference
Yes I too think so Because when I observe Chess.com rating of 2300+ players in lichess they are around their rating on lichess only

Confirmed, I am 2300+ on both sides and it feels the same. 2400+ are better on Lichess than on Chess.com though.

When you get to the 2200+ range, you'll start encountering a lot of the same players on both sites, just under different usernames.
So the pool of players starts to merge together, at a certain point.

Up to 2200 it's a bit easier on lichess but in the 2300-2400 range there is no big difference
I disagree with 2300-2400 there's no difference.
Just recently I've played on lichess with someone(2300+), I wasn't concentrating much, plus watching TV and suddenly I lost a piece, after that I still won the game easily.
In chess.com there's no way or at least I can remember any example, where I blundered a piece from beginning of the game pretty much to a 23 hundred player and still won easily.
I don't know but for me chess.com player much faster and stronger for sure.

What do you think is the relationship between chess.com and OTB and lichess and OTB?
I would say if we take any blitz rating (which is not provisional etc... ) minus 200-300 points , that would be your FIDE official strength and rating in my research and opinion it's pretty accurate.

Yes. My Lichess has rating has always easily been higher than my chess.com's. Lichess rating now is about 100 pts higher tham chess.com.
I’m currently at an all time high of 2181 on Lichess and my chess.com rating is 1921 (both blitz). Be interested to hear what other people’s ratings are. I’m just playing unrated games on chess.com though at the moment.

I’m currently at an all time high of 2181 on Lichess and my chess.com rating is 1921 (both blitz). Be interested to hear what other people’s ratings are. I’m just playing unrated games on chess.com though at the moment.
You shouldn't be compare unrated games, it must be rated vs rated blitz vs blitz , same time control vs same time control etc...
I have achieved both 2300+ blitz ratings, on chess.com and lichess and I feel like achieving it on lichess feels more like I achieved 1000 rating or something ( "walk in the park") feels very easy , without much trying or stress, whether if I try to do the same on chess.com feels more like an endless torture back and forth.
My point is even tho ratings are the same (pool of players are different of course) it feels so so so much harder on chess.com, maybe because of some lag on chess.com as well I don't know.
That's just my opinion, I'm interested to hear other strong blitzers to hear their opinions.