It might have sold a little better, you solved the price issue by removing the controller. But the power issue, lack of killer apps, and lack of third party support remain. Nintendo was successful with the Wii, but even the Wii had run its course by the start of the decade. Without the controller and a 199 dollar price point we might have seen sales in the 20-25 mill range.
That tells me that you think price to performance/features wasn't a large factor in sales. "We might have seen 20-25 million range.", isn't a very confident statement. That's about 5-10 million more units sold.
I disagree. I think it would have done 35-40 million had the price been $250 instead of $350, for the 32 GB model of the Wii U. It still would have been a console with sad sales. Just XB1 levels of sadness. Switch probably wouldn't have released in 2017 with sales like that so it would have an extra year or two to get those kind of sales up. So something like 30-35 million by 2017, and another 2-3 million or so in 2018 and 2019 each.
Why? Because the software for the Wii U just wasn't there. It had 2 years of good games bookended by two massive droughts.
What if Nintendo had released the Wii U as a machine rivaling the power of the base model PS4, for $400? How much better do you think it would have sold then?
Please answer before viewing my own opinion on it below...