Eh, I always look at the Rotten Tomatoes percentages (critic scores, not user scores usually) in the context of what kind of movie it's supposed to be. Paddington 2 has 100%, but that's holding it up to other kids' movies.
So take Jumanji (76%). The critics aren't saying it's good compared to, say, Citizen Kane, but that it's generally good against other silly action comedies geared towards younger audiences.
Also yeah Karen Gillan is hot.