My chess.com blitz percentile is 95%, and lichess is 68%. Is lichess more difficult than chess.com?

I play same time controls on both sites, so either I play worse on lichess than on chess.com, or lichess playerbase is stronger.

Kind of weird though, that's almost a 30% gap. My chess.com account is named the same as this here if you wanna check.

Maybe all good players play on lichess.

Not a big enough sample size. You have too much of a life outside chess or your country isn't locked down and nailed in. Play another million games then come back :)