The details of the two cases are very different and here, details matter. The courts have already rejected "iOS app distribution" as a valid antitrust market.

Edit: In case you're wondering why "Android app distribution" can be considered a relevant market whereas "iOS app distribution" was rejected even though they both sound like the same thing, the key difference is "iOS app distribution" is a single-brand aftermarket, and single-brand aftermarkets have stricter requirements in order to be accepted by the courts.