>>56229755At least from this example there is clearly more work and design put into the left than the right
The right is just typical modern flat UI.
I'm sure the sprites on the right are small to roughly represent their actual size, but it just looks like shit. It leaves a massive amount of empty space and they're barely visible. PLA handled the PC UI much better, it even displays when a pokemon is shiny unlike the other mainline games, but it still has the issue of the UI being mostly flat