They are misleading because the PS3/360 are cheaper and have bigger software libraries.
The true test will be to compare to what the 720/PS4 will sell. At this point, saying the Wii U isnt selling well is premature. You have no comparison basis for it and the economic situation is significantly different then before.
The question is: Will the PS4 and 720 sell more than what the Wii U is selling? Also, will they be really a significant jump on technology or not? I see alot of people judging without having the answer to these questions.
As for the poll, its misleading. The endurance of a system comes from sales and the support of developers (including first party give to it). The PS2 could still be enduring if Sony kept making new games for it, for example.
