The game's code is 100% identical between BW1 and BW2 when it comes to everstones.
Basically if the highest bit of the rng call is 1 it passes and if it's 0 it fails. There's an equal chance of the bit being 1 or 0 so 50:50 chance.
Never mind it looks like GF made a huge mistake and the first egg you receive will ALWAYS have the exact same nature/everstone/inheritance value.
My Pokécheck Pokémon
<~Nexus> Mat's seen things that would make you wake up screaming in the middle of the night NO MORE RNG NO MORE RNG
<CDXCIV> kittens is not a Pokemon.
Last edited by Slashmolder; Jul 5th, 2012 at 10:46:07 PM.