As far as I know, Pokemon on Pokemon Black and White have to stay on those games, as for Pokemon HeartGold and SoulSilver, you can not only migrate Pokemon from earlier generations of games, you can also trade with Pokemon Platinum and Diamond and Pearl. Still, the Pokemon on Pokemon Black and White look cooler! :)
SOulsilver
The hoothoot is better
Well, both are about the same, but the best is probably your mother.
Soulsilver is way better because Ho-Ho has to flap its wings to fly, and Lugia doesnt flinch its wings.
you can buy soulsilver and/or heartgold on march 14th in Canada ohh and by the way heartgold is better and if you want the action figure from the pre-order go to future shop and buy it for 1 cents
In 2009 HeartGold and SoulSilver will be released only in Japan and heartgold is way better having hoho
up to you heartgold has ho-ho (fire). soulsilver has forgotten the name (wind)
Heart gold and Soul silver is better because most of the Pokemon in Black and white you don't know if there good or bad,but in Heart gold and Soul silver we all know Lugia and Ho-oh.
i think heartgold is hell better because hoho has a amazingly pro high attack and special attack and lugia has a high defense and to much of attack.(remember you can't only be able to take a hit you must also be able throw a hit back).
Personally I think kabutops is better.
There both the same game but in Heart gold you can catch Ho-oh and in Soul Silver you can catch Lugia. So they both have the same pokemon. If you like the Pokemon Kyogre, you can catch one in Pokemon Heartgold. If you like Groudon, you can catch one in Pokemon Soulsilver.
It depends. You get Lugia and Ho-oh in both games, just one comes first. I personally bought SoulSilver but it is really up to you!