Yeah.
I mean, Smash Wii U has no anti-aliasing, and some of the textures aren't the best.
Heck, I don't think Captain Falcon and Ryu's lips move when they taunt, so there is definitely room for improvements.
"Just for comparison Uncharted 4 was 20x bigger than Splatoon 2. This shows the huge difference between Sony's first-party games and Nintendo's first-party games."