It's good something moved, but considering the console costs 199 Euro now and it got a new game with yet another one coming next week, this result is going to be awful anyway. Doubling the sales in a couple of countries really isn't impressive. When Vita got it's cut (which was actually smaller than what Wii U experiences now), the sales grew over 600% without a single new game released and they grew even more the second week, when Sony released a game. I don't think anything can save the Wii U at least until Christmas or Q1 2014 and the real big games.
I have been thinking about it recently and I think that I will buy a Wii U once it gets a new Zelda (not just the remake), Metroid Prime, X and Bayo 2 and I'll find a SKU with at least 32 GB for 199 or cheaper, even if that means I'm going to buy it before I get a PS4 - even though I was planning to buy Wii U as the second console.