Halo 5 : "Industry sources support our belief that Halo 5 digital sales were much closer to half of units than the 20-25% GameStop is suggesting."

[Protendo]

I don't think anyone expects 50%.

There is no way that the normal high of 20% increased that much. That'd have to be a new digital AAA attach ratio record, and Microsoft would made sure we all knew just how hight the attach ratio was.