Asobo is quite impressive given it's more of an AA studio.
Both games look pretty good, though I somehow find Ragnarok's graphics to be a bit chunky and less detailed.
Haven't played Ragnarok (yet), but as for plague tale, it's more of an interactive movie than a "game". I think they even took out the dodge mechanic. I felt like the last game was more of a "game", but if you go into it wanting a walking simulator type of experience that works well.
The story, voice acting, and aesthetics definitely warrant a playthrough. I am enjoying my time with it more than I thought I would (I generally like more gamey games, but occasionally I'll do a story-heavy experience).