Depends what move it has
Kyurem is number 152 in the Unova Pokédex, and number 646 in the National Pokédex.
Arceus is generally picked to be stronger, because of how it created all of the Pokèmon world.
well it depends on what card you have, your preferences, and what kind of deck you get it from.
That depends on the trainer and the way the pokemon is used. The highest-level Pokemon found in the wild is Kyurem, at Level 75.
No.
no just one or the other
You can't make it transform in Pokemon Black, only Black 2 or White 2.
Including Genesect:-155 Pokemon in the Unova region.
yes, yes it is
yes
madarchod
Pokemon can not transfer backwards. You can get Pokemon from other games to Unova, but the opposite is impossible.