Well, considering that the XBOne's weekly baseline prior to TF was close to 80k, that means that 80k of those weekly sales after TF released were going to happen anyway, so if we just look at how far above the baseline each week has been, we get this:

1st week :76k
2nd week: 32k
3rd week: 11k
4th week: 5k
Total TF boost: 124k

Wii U's current baseline is around 35k (or lower, if the 30k it sold this week and the last becomes a trend), so if MK8 has the same sales boost as TF, Wii U will sell 264k in four weeks. If the boost is distributed the same as Titanfall's boost, we get:

1st week :111k (217% above baseline)
2nd week: 67k (91% above baseline)
3rd week: 46k (31% above baseline)
4th week: 40k (14% above baseline)
Total sales: 264k (88% above baseline)

Of course, the TF boost wasn't just a TF boost, there was also a lot of bundling and a small price cut. If Nintendo doesn't bundle MK8, then MK8 will have to have the same effect on Wii U sales by tself as those three things had on XBOne sales. Personally, I don't think it can pull that off.

In the long run definitely. First week though, maybe not.

I thought we were talking about mario kart, wich is pure legs.

Still waiting your explanation on what is wrong in saying a minimum value of one's prediction is low.

Wii U MK 8 bundle will have legs. Looong legs.

First weeks maybe good as many have hold back their purchase for this one, but after the drop expect to see a steady increase in sales.

Wii U will show its full potential during this christmas shopping season. After that everyone will wonder how the Wii U could have been questioned at all...