내 SKAN 재설치 번호가 Branch에서 일반적으로 표시하는 것보다 훨씬 높은 이유는 무엇입니까?

SKAdNetwork reports reinstalls via the redownload postback parameter, which Apple defines this way:

값이 true일 때 고객이 앱을 다시 다운로드하여 재설치했음을 표시하는 Boolean 플래그입니다.

Similar to the Redownload numbers provided by Apple Search Ads, this data is likely coming directly from Apple's internal records for that customer. That means it is different from (and more accurate than) anything a third-party like Branch could infer, even prior to iOS 14: depending on the situation, Branch would see these events as either re-opens or simple installs.