Card Rarity Distribution Rates?

[DanTheTimid]

Ok so after looking through the card lists I've noticed what appears to be 5 different rarities for cards in the first set, each designated by stars with presumably more stars meaning higher rarity. I counted them all and broke them down into more traditional card rarity terms as follows:

40 common
28 uncommon
16 rare
8 super rare
8 ultra rare

Ok so the first couple are fine, but both 8 super AND 8 ultra (thats 4 and 5 star rarity) thats a little scary depending on the rarity distribution rates.

So my question is, can you give us some sort of idea where the rarity distributions are at. Like is it 1 rare per back, 1 super per 3 packs, 1 ultra per 6 packs?

8 cards in the highest rarity is a little intimidating so I'm hoping the distribution rates aren't too bad.