i don't think weak hardware has anything to do with this. WIIU can get an enhanced port of PS360 games or even equel ports.
WiiU was given several ports of PS360 games and they all completely bombed at retail. I'm sure it was either Splinter Cell Blacklist or Arkham Origins that sold around 5000 copies on WiiU.
If those types of third party games had sold even a million copies Worldwide then there would have been even more projects green light for WiiU. Man power wasn't really an issue either since most third party WiiU games were outsourced to much smaller development teams.
i honestly do not know why nintendo WIIU isn't selling well. but i believe its the price that what killed it. people didn't want to buy 350$ system that has the same graphics of a 200$ console called xbox with less games.
Nintendo saw this, like the usual old mentality stubborn idiots people, they didn't reduce the price of the system. sales kept going very low and 3rd party developers gave up on nintendo.
You do know Nintendo were taking a loss on WiiU from day one right ?. Reggie said at first they had to sell one game to break even and then changed it to "more than one game" a few days later. I don't know how that translates to specific loses but I would guess they were losing at least $50 per box sold in the first year.
They then price cut the deluxe console by $50 just ten months after launch and added a choice between two of their biggest titles (NSMB U or the newly released Wind Waker HD) which again would have cost them potential profits.
Losing $50 per box is bad enough but you want them to lose $100 by cutting to $250 or even $150 by cutting to some peoples ideal price of $199 ?. That is billions upon billions of loses to Nintendo.
The Gamepad is at the root of all WiiU's problems because not only is it an unappealing unique selling point but it also put third party developers off aswell as making it impossible to launch at $249 or drop the price to $249 within the first year.
E3 will show us a much better picture of WiiU's future. If they announce a new Metroid and Animal Crossing aswell as Zelda U then they will support the system until at least the end of 2015 but if all we see is Zelda U and more of games we already know about then it shows Nintendo have completely given up on it and will simply try and take peoples attention away from it with QoL in 2014 and the new handheld in 2015 before revealing their next home console sometime in late 2015/2016.
On a slightly related topic I really don't know why people are expecting a WiiU like situation from XBone. Even if it only sells 50% of PS4's lifetime sales you are still talking in the region of 40 - 50 million sales even at the worse end of hardware sales predictions for the entire generation.
A 40-50 million userbase which uses a very similar hardware architecture / power range as PS4 will not be ignored by third parties under any circumstances esp when the company is as wealthy as MS and can throw an almost unending amount of cash behind advertising it.