i saw your reel where you discussed about a Reddit post where the OP opened up many boxes to determine pull rates. What I understood from the reel is that the Reddit OP found that there are guaranteed hits from booster boxes.
I am familiar with how terastal festival boxes can be mapped( meaning what ever pack you pull the ace spec card will tell you where you will pull the hit of the box)
Is that similar to what the Reddit post was talking about ?