What?
Second worst Kirby opening week in the franchise. Kirby's Star Stacker on gameboy is the only one that opened with less.
Oh, I should have said, as far as I remember, it's not too bad relative to other Wii U W1 sales. Relative to Kirby, it did terribly, but then I expect as much since IIRC DK for example also did terribly in week one. And some other W1 sales for Wii U games:
10./00. [WIU] Game & Wario <ETC> (Nintendo) {2013.03.28} (¥4.935) - 22.491 / NEW
01./00. [WIU] Pikmin 3 <ACT> (Nintendo) {2013.07.13} (¥5.985) - 92.720 / NEW <48,45%>
07./00. [WIU] The Legend of Zelda: The Wind Waker HD <ADV> (Nintendo) {2013.09.26} (¥5.985) - 30.264 / NEW
02./00. [WIU] Super Mario 3D World <ACT> (Nintendo) {2013.11.21} (¥5.985) - 99.588 / NEW <57,17%>
02./00. [WIU] Donkey Kong Country: Tropical Freeze <ACT> (Nintendo) {2014.02.13} (¥5.985) - 35.717 / NEW <35,28%>
07./00. [WIU] Captain Toad: Treasure Tracker <ADV> (Nintendo) {2014.11.13} (¥3.996) - 28.025 / NEW
Pretty rough for secondary franchises. Kirby's solid relative to that.