Mr playstation...,it's not right to use the LT numbers of previous Nintendo home console and the LTD number of wii u as of march 31 2015 for the comparison/number of the drop from gen to gen,this make wrong impressions,wii u still sells...
Seriously,change it,suppose where wii u can end,put a range,like 15m-18m or mention that the numbers you put is as of March 31th 2015...
As for the question,Nintendo must have learnt from its mistakes,plus it might follow a revolutionary route that be sure will make NX to be above Nes at least,you get what I'm implying if it's only something traditional,in my opinion,they have to control the extra costs in order to be doing price drops freely,without making any loss,that alone can definitely make the successor to sell more than wii u,which isn't a hard feat to be honest!
USA is the key,as wii u in Europe/Japan/ROW,is not very far from GC,the huge gap in the USA with gc is due to the big price cuts of gc in 2002 and 2003 which had a great effect although gc didn't end up with huge numbers but it was just two million behind from the second and a great money maker,if it hadn't gotten them things would be worse,ps2 was a sweeper the price situation is a big factor in the USA,history tells!
There are many people who won't buy wii u,because for what it provides,it's expensive,it hasn't get any price drop and might won't ever get at least one!Consequently,that will be one of the many drawbacks of wii u,for me catalytic!
As for the decline,it's mainly success/appearance of new competitors or market shrinkage/remaining room size for growth more than just a decline!I mean that decline doesn't mean only that people jump to another ship,but that they also abandon the ship in general...
