Card Rarity Ratios between Expert and Goblins Versus Gnomes Packs

I just asked about the difference in totals of collectible cards between Expert packs and Goblins Versus Gnomes packs: Card Counts for Expert and Goblins Versus Gnomes Packs

So clearly Expert Packs are drawing from a larger pool. But I'd like to ask a couple follow up questions:

What is the ratio of legendary/epic/rare/common of the collectible Expert set compared to the collectible Goblins Versus Gnomes set.
When opening a pack are the chances to draw a specific rarity adjusted to accommodate the difference in ratio.

In other words, do I have a better chance of getting a legendary when opening an Expert pack, a Goblins Versus Gnomes pack, or are my chances the exact same?

hearthstone

Best Answer

Blizzard has stated that the probability of opening a card of a specific rarity is the same in Classic and GvG boosters. That said the probability of opening a specific card in a GvG booster is higher than the chance of opening a specific card of the same rarity in a Classic booster, because there are less cards of each rarity in GvG than in Classic.

Propablities for each rarity can be found here.