I don't believe that any of these 3 games are HW sale pusher. Or maybe a 5-6000 boost all together but it falls under the tolerance gap of the VGC estimation. I only believe that 3+ millions sellers (SMM2, FE, AS, LM3, Link's Awekening, the 2 Pokemon) can have a visible boost effect.
Then why do you exclude Fortnite? It got downloaded 2M times in it's first week on the Switch.
What's more, it's on half of all Switch systems - that's a higher attach rate than MK8DX has!
Add to that the fact that Fortnite had been hyped up a lot at the time, and I really wonder why you leave it out as a reason for pushing sales.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454