Quoted By:
Unova just did a past/future theme better than SV because there were actual hints of it beyond version exclusive Paradoxes.
>Reshiram being more organic whereas Zekrom looks more biomechanical
>Route 4, Opelucid, and Black City/White Forest being different depending on what version you were playing
>Drayden being an old man and Iris being a young girl full of potential
>Team Plasma being knights with a castle in BW1 compared to being terrorists led by a scientist and having a flying ice laser battleship in BW2
It's probably the region with the most noticeable differences based on which version you play compared to Paldea maybe changing the color of the school you go to and that's it.