Anonymous B joined in and replied with this 2 months ago, 14 minutes later[^][v]#1,426,373
there both about the same, the only real difference is the postgame area really.
Blacks black city is kinda... meh... honestly. Everything you can get there is obtainable elsewhere. Its sole saving grace is the vaporwave aesthetics, imo.
Whites white forest on the other hand, is far more useful, imo, as it lets you catch pokemon not otherwise available to white version(and isnt in black version at all)