I must say like the others that I disagree with you here. Perhaps you would like to post a few comparison pictures and point out where and how you think the SwSh Wild Area looks better?
I will say "better" is mostly just me exagerating the issue, but I do see comparable graphic artifacts in both.
For example, look at the grass on the sides here:
that's same or very slightly better than the grass textures in SwSh.
The shadow also don't make any sense, either.
For most of the footage, they have made much more clever use of 3d grass and similar elements to hide the textures, but in the few areas where the 3d elements arent, it's evident.
I also have no idea what's going on with the lighting on the ground here, and the grass on the right looks like a single-piece mass rather than have anyrealism. The trees look awfully jagged, as well, and the player(?)'s scarf has some evidente palette issues in the shading.
As for the FPS, this is the official trailer:
the FPS drops noticeably when the player is moving, also wtf is happening to that chingling basically teleporting up and down while floating? I also sure hope the Riolu (quick?) attack animation is intended to look like that cause otherwise that's a frame skip if i've seen one.
Now, I'm not saying that I do expect, or even demand, high quality graphic, I've been very adamant in saying I never cared of SwSh graphic issues either, but some parts of the trailer were really hard to watch for me.
Will they ruin the enjoyment of the game for me when I get it? Unlikely, but honestly, if they aren't capable of doing proper 3d ""realistic"" texturing, I'd rather have them stick with the easier to execute cartoony look that Let's Go had, instead of trying to force too much their hand.
That said, this is indeed very early footage, and there's a chance that by the time this game actually comes out, those artifacts are gone. At least, I hope.