well thats because the gamecube was ahead of ps3 after six months
The PS3 is an awful example of a bomb made successful because it cost Sony about $3bn to steer the ship back on course.
PS3 is the worst example of a console industry "success" anyone could ever point to.
When you think about it, logic would dictate that Third Parties should have some more games on the Wii U this holiday season due to the increase in the install base by that time. Nintendo's heavy hitting Mario Kart U will be coming out and there is going to be a lot of people buying a Wii U and they are going to want some options to play with on the system.
The problem is that we don't know exactly;
a) Which games are are actually coming for the holidays and which will slip into 2014,
b) Whether their Q4 software will slip like all of their launch window titles did,
c) Whether these games will actually move units. New Super Mario Bros. was heavy hitting on the DS and Wii, but hasn't gained much traction on the 3DS and outright failed to move Wii U consoles.
Essentially, you're asking publishers to bankroll 8-digit development budgets to support something that Nintendo might potentially do. They might drop the price, they might have 3D Mario ready for Christmas, they might relaunch. But at the same time they might not.
The thing really working against Nintendo is that they utterly fucked up the launch. They over-priced, they confused consumers, they have no gimmick-justifying software, they had just two games ready for launch, every other launch window game slipped into Q2-3, some like Wii Fit U are still MIA.
We can't just presume that Nintendo are going to hit it out of the park at this E3 and for the next 12 months because we presumed that they'd do the same thing last year and they totally screwed up. Unfortunately Wii U game budgets are the same as PS360 game budgets - this isn't the Wii - you can't just throw a few million dollars at a game to see what works. You're asking publishers to make a significant investment in a platform that has been mishandled from the start and may, or may not, sell well this holiday off of the back of games that may, or may not, be released for the holidays that consumers may, or may not, be tired of.