However, completing ultra rares demands 2-3 boxes, after which singles become necessary to avoid duplicate pulls
I misread your question and thought you were asking why they are different, but anyways haha We dont really know for certain, but its probably because whatever processes, texture files, and or tech Japan/TPC uses for texturing are different than the ones TPCI uses
Along with that, it can also be beneficial to make sure that you are covering your cards
Order the Shiny Star V box ASAP
Since you will not always need these, Pot Of Prosperity is phenomenal in the deck as you can always use it to its max potential since you won't worry about banishing six monsters permanently from the extra deck
Back it up with the newest Code Talker monster for a devastating one-two punch