I’ve a dumb query

So I’ve a bunch of bodily Xbox video games with recreation circumstances and out of all of my Xbox one/sequence circumstances solely 2 have totally different disc pegs from the remainder and I used to be questioning if anybody knew why, if they’re official circumstances, if it simply will depend on the 12 months. The injustice 2 case picture is what majority of the circumstances appear to be and the mk11 is the one which solely has 1 different that appears prefer it, the whole lot else concerning the circumstances are similar