I'd put Black and White at a 9 in terms of difficulty. They were definitely the hardest of the main games for me. I had a hard time against just about every single Gym Leader and even the occasional Trainer. I ended up having to stop and grind entirely new teams meant solely to defeat whatever Gym Leader I was up against at the time. I somehow managed to beat the Elite Four/N/Ghetsis with no trouble at all, though.
Black 2 and White 2 were about the usual for a Pokemon game, though. The only real trouble I had was against Iris, and even then I still managed a win on my first try. I'd put those at about a 4, maybe 5.
Black 2 and White 2 were about the usual for a Pokemon game, though. The only real trouble I had was against Iris, and even then I still managed a win on my first try. I'd put those at about a 4, maybe 5.