Lichess is for free.On
chess.com you are welcome to pay for some serious lag.
In lichess there is a good design.In
chess.com you have to search badly to find something.
In lichess there is a good tournament system.In
chess.com i can find only correspondence tournaments :)
In lichess there are more chess
variants.Chess.com has way less.
Lichess has a good visibility and ability of creating good-looking studies to improve chess.In
chess.com....i don't know if there is anything similar to lichess study.
Lichess has learn from your mistakes
feature.Chess.com copied it from lichess.
Lichess has good and friendly
moderators.Chess.com sometimes does not have any at all.
Lichess has developers that work hard to add something new here
everyday.Chess.com does not change anything for ages and is boring.
In lichess i have some good friends to play with.In
chess.com i don't have any.
If this was not enough to make you see that lichess just is so much better than
chess.com,then tell me and i will add more reasons why it is.