I really hope this is a joke.
I'm loving Assassin's Creed Shadows and it's probably the best game I've played since Astro Bot last year but this comparison is absurd.
Shadows has so many weak points, so many. The story, the quest design, some of the side content, the repetitiveness, arguably the combat and so on just to name a few.
Meanwhile, Red Dead Redemption 2 is still the benchmark in so many areas of a video game. The story, characters, voice acting, soundtrack, open world, side content and so much more are still leagues above any other game ever made.