Are we talking about two or three months now? Thread title, poll and original post are all over the place.
I'll answer for the two-month-period. The PS5 is bound to be the highest because it's a holiday launch and has global appeal, unlike the upcoming Xbox. Second place goes to Xbox because of a holiday launch. That leaves Switch in third.
Hopefully this finally buries the misbelief that a holiday launch means a wasted holiday season. A holiday launch means that month 1 and 2 are equally good whereas launching outside the holiday season results in a significant dropoff from month 1 to month 2.
EDIT: Switch managed 3.06m in its first two months, so yes, there's little doubt that the new Xbox is going to beat that, and the PS5 will beat the box.Last edited by RolStoppable - on 17 August 2020