Obvious bait, But valheim is superior to both of them. The only survival game that even comes close to how good Valheim is, is the Forest.

Valheim is a bit grindy, but I think it makes the game paced better. As you learn to optimize, you cut a lot of the grind out, as most of the grind is Optional safety net ♥♥♥♥, like upgrading your gear multiple times (totally not necessary, just gives you one or two extra ♥♥♥♥♥♥♥ in combat)

Most grind comes from your base, but the more you invest in your infrastructure, the more it pays for itself in time saved later but ultimately, especially in its early access state with no end point, the game is all about exploration and hording resources or building new things. To get any type of long-term satisfaction out of game only about half complete, you have to be very self-driven with your goals. For example, I'm currently RPing as a Templar purging the world of Magic, killing any magic users I see on sight and hording all the Eitr in an underground vault. My friend who plays on my same Dedicated Server is RPing as Goblin Slayer. Every 30 minutes or so over chat I'll hear "GAAAAAAAAAAWWWWWWWWWWWWBBBBBBBBBBBLLLLLLLLLLLIIIIIIIIIIIIIIIIIIIIIIIIIIINNNNNNNNNNNNNNNNNNNSSSSS!!!! And if I go to the spot he shouted from, all I'll find is scorched and salted earth, with an effigy built to mark his conquest.

Like most sandbox games, Valheim is what you make of it. If you can't handle that, you might be better served sticking with Sony Moviegames like God of War.