Last quarter.

Wii U: 200,000

Mario Kart 8: 260,000

Thats intersting. 

If we follow that, which is the game selling 130% against HW and Nintendo hit their 800k for the FY then MK8 would sell 1,040k

Could be closer than I thought, but I'll stick with no.

Peronally love the game and would love to see it do it though.

That's really impressive. I guess this will be close either way... a nice feat for Mario Kart 8.

That's currently, though.  It's gotta maintain that for the last leg of Wii U sales, and increase slightly (it's at 58% if these numbers are to be believed), meaning that there needs to be 700K of the last million or so Wii U consoles sold for it to definitively break 60% at the end of the lifetime.  Even if it does 65% attach rate for all new owners (assuming the system ends around 14m units total), and sells 8.2m lifetime, it'll still be below 60%.

Which, still, is absolutely insane, and will hold as the last high attach rate IMO, but it's not 60% lifetime unless it sells incredibly disproportionately compared to now.  (If they do a Nintendo Selects, that's got a better chance of happening)

I think will end up around 60%.

IF it beats SMK, it will hit 60% no matter what, since the Wii U will almost certainly not pass 14.5m at this point. But it's up in the air otherwise, depending on how well the game tracks compared to the system and how many more units are produced for either. Right now it has to sell absolute minimum 10% more units than the Wii U on a consistent basis from here on out to hit 60% marketshare. That's entirely doable, yeah, but that'd be an insanely impressive streak to go on, almost on par with hitting 60% at all! I think it'll stick right around 58% at its current pace unless they do some bonkers sale - doubtful considering people will pay $60 for that game either way - or hit a Selects version for $30 after the NX launches. It's gonna be close though.