Lichess vs Chess.com Atomic

I've tried playing Atomic in Chess.com lately (lichess is blocked at school ), and I realized that chess.com atomic players are significantly easier to play against then Lichess atomic players. I am rated around 1500 atomic in Lichess, but I achieved 1700 rating in Chess.com after only 4 days of playing. Are people here just better at atomic? If so, I thank the Lichess community for giving me Atoic expirence. There are 1500 rating people in chess.com that still don't know how to counter the knight opening without losing their queen

No it does not mean that. Ratings are relative 1500 in one pool of player can mean absolutely anything in a another.

Of course chesscom has no proper variants culture

lichess have whole database which is easy to find lichess players just cram the openings but chess.com players dont have engine for vareints thats why chess.com players dont know openings and blunder