Pikmin 3 is definitely one of the best 5 games for Wii U.
Beautiful, colorful, with great gameplay...there is nothing similar on market like Pikmin 3.
Problem with Pikmin 3 was that was delayed several times (initially plan was to be Wii U launch title) and was released in middle of summer, also in worst time for Wii U, Wii U were breaking records with bad sales, internet was full of negative articles about Wii U...all that affected in some way that people somehow forget about game, also one problem for game is that is hard to find it.
But I don't agree that W101 is more often mention, biggest reason why W101 is mentioned because has just terrible sales despite fact that is a good game.
I think with Nintendo Selects people will become much more aware about this gem.
Also I cant wait to Nintendo revile Pikmin 4, and this point I hope that is NX only game that will great use NX hardware, I cant imagine how Pikmin will look on stronger hardware when Pikmin 3 looks so beatifule on Wii U hardware.