If anyone was wondering how the booster packs for the western release it the following
1x Hero or Legend (seems to be 1 Legend for every 9 Heroes)
1x Holo from either Common, Rare, Hero, Legend or Special
The holo ratio seems to be same as the rest of the booster pack
out of 11 booster packs you seems to get an average of 7 common holos, 3 rare holos, 1 hero or legend.
out of 36 packs you seem to get 1 Special Holo and 1-2 Legend
This was only from opening 72 packs so it might be off
But it seems to be the following percentage
change of card %
Holo Common 60%
Holo Rare 30%
Holo Hero 6%
Holo Legend 3%
Holo Special 2%
I suspect Holo special is probably lower than 1% and Holo legend is probably lower but this is from 72 booster packs so not a massive data set.