It depends on what do you like about each. Reshiram is exclusive to Pokemon black, while Zekrom is exclusive to white. Reshiram is dragon/fire type and Zekrom is dragon/electric type. Reshiram is white and Zekrom is black. Both has a total stat of 680, capture rate of 45. Reshiram has high special attack stat, and Zekrom has high attack stat. There are about 50 fire type that you can choose from, and about 45 electric type.
You can't without trading with someone that has black.
Snivy, Tepig, and Oshawott are the starter main Pokemon. The legendry Pokemon is Reshima. Hope I have helped.
In Pokemon Black Version the legendary is Reshiram and Pokemon White its Zerkrom.The only way to get both is to transfer Zerkrom to Pokemon Black Version or Reshiram to Pokemon White Version.
Pokemon is better
Pokemon fire red is better.
Pokemon battle arena is better than Pokemon league.
In my opinion, Pokemon Platinum is the better game.
Pokemon is better than chaotic
Muk is the better pokemon
I think pokemon Black is better than the both of them. Still, I liked pokemon Platinum.
I personally like Emerald better, but Pearl has better graphics.
Dialga is a better Pokemon then Palkia. that's why.