PUBG only looks at steam. Doesn’t look at Xbox, isn’t on PS4, and it costs $30. Fortnite is free. They can’t really be compared.
They can be compared in the fact that both are really bad.
The genre is kind of interesting, but so far, every game in that genre was bad. Maybe a AAA Studio will make a good one later.
If those shitty games can get that much players, think how much a good game with the same idea could do.
Fortnite is a bit better than PUBG, AND is free. BUT being better than shit doesn't mean much.