Since this is effectively also the thread for UK charts, lets look at Forza Horizon 4.
So We know that it's physical debut in the UK was 1% higher than Horizon 3. For Horizon 4's second week it was a 67% drop. I went back and checked for Horizon 3's second week, it dropped 71%.
So we can conclude that Horizon 4 had the better second week and the overall lead, albeit by a slim margin.
Which is actually quite impressive, given that the game is also available on game pass, and digital has quite a bigger share in game sales now as opposed to two years ago.
Bet with Intrinsic:
The Switch will outsell 3DS (based on VGchartz numbers), according to me, while Intrinsic thinks the opposite will hold true. One month avatar control for the loser's avatar.