User blog comment:Godisme/Fairy Tail Wiki Pokemon Tournament- Sign Ups and Announcement/@comment-16344653-20130502220209/@comment-5840892-20130502234257

Plus according to the in game Legends Zekrom chooses the Hero who desires a Ideal World. IMO much better than Reshiram which chooses the Hero who desires a World of Truth (but then again, my Ideal World is one of truth). Also Zekrom represents Yin (or darkness).

As for the sequeal games (B2,W2) I recomend White 2 as it then you will get Reshiram (as you get Zekrom in White). Or, you can get Black 2 (like I did) and get Black Kyurem after the main story and capturing Zekrom (which N gives you in it's Stone state) then Kyurem which will drop an Item which when used fuses Kyurem with Zekrom. Here's a a link to Serebi's Pokedex Entree for Kyurem with all of its formes.