As far as I'm concerned Darth there is no difference other than Timer0 flux. Some legends have random PIDRNG advancements (Kyurem has a offset for some reason in his cave, have to adjust for that).
Originally Posted by darthmalice777
Some legends have NPCs aroudn them, like the Latis have one trainer that moves in the Dreamyard. Uxie is practically impossible to get shiny because there is 7-10 NPCs that advance the frame. Thats about it.
Breeding in B2/W2 is pointless to RNG, if you didn't know that already.