My impression is that Pikmin is more focused on walking and has some idle game elements, there's nothing analogous to the capturing or battling elements of Pokemon Go (at least that I've seen so far -- you dispatch teams of pikmin to defeat mushroom challenges, but it's completely hands off once you dispatch your team). Personally I was pretty burned out on Pokemon Go, it was feeling more like a chore than something that was keeping me mentally engaged on my walks. Pikmin Bloom is working better for me on that score right now, I don't know how much longevity it has, though.