I like how Alolan Ratatta shows off actual evolution (by Natural Selection)
Apart from Raichu and Meowth, they all do. This is just the first time they've shown the reason why so directly to fans. Other descriptions of why they changed are up on the Pokemon site, and can also be found in Serebii's
Alola Form Pokemon section.
- - - Post Merge - - -
Speaking of, are the 3DS versions of Wii U games downgrades (graphically/otherwise) ? Hyrule Warriors is something I'd only want to get for wii U when the price is right, not 3DS. I think I'd prefer Yoshi's Woolly World on Wii U too for the nicer graphics.
Graphically, yes. In terms of gameplay, it depends.
Super Mario Maker 3DS seems to have received some fairly big downgrades, since custom stages can't be shared online anymore, you can't search by ID, and Costume Mario is out. I guess it does have the functionality where you can create stages with other players, but I didn't see a lot of exclusive stuff.
Hyrule Warriors Legends doesn't have co-op, Challenge Mode, and 8-bit weapon reskins. It does have entirely new stages, new storylines, and new forms of attack like the team-up. There's also 3DS-exclusive DLC Adventure Maps and costumes. So it can be seen as both an up- and downgrade, and really comes down to what the player prefers. Both versions of HW are fantastic in their own right though.
Woolly World only seemed to receive a graphical downgrade, with a lot more stuff being added to the game than was available for the Wii U version.
