It's a tough one to call. SM 3D Allstars shipped 9m in just 6 months before it was discontinued, but it may have sold faster because it was a limited release and people needed to get it quick if they wanted to get it at all.
That SMG has already been available on the Switch through 3D Allstars may also hurt the sales of SMG1+2. Plus how will the individual sales be counted? If someone buys SMG 1 only, or SMG 2 only, or both individually...
Both games will probably go over 10m lifetime, but other than that I don't really have an idea of how SMG 1+2 will sell, either out the gates or lifetime. I don't really know how to predict it either way, my gut says SMG1+2.







