All the rest suck, including BW2. And BW isn't even that good; it just brings Pokemon to the relatively low standard of "typical JRPG." Although in Black 2 the bad guy does try to straight up murder you, so that was cool to see in a Pokemon game.
I didn't think DPPt had a bad storyline premise, but the Team Galactic guys were over the top stupid and that kind of ruined it for me. Not that Team Rocket or Magma/Aqua weren't stupid, but Team Galactic... well, they try to rob the prof. at the beginning of the game for his research that says "pokemon evolve." How this isn't common knowledge to everyone everywhere is lolorific.