i have search on twitter and asked them what about the Wii U double xp weekend.
i found a tweet were it clearly says that there is double xp all platforms except the Wii U
link to twitter from activision support https://twitter.com/ATVIAssist/status/416851336689623040
my opinion: verry dissapointed we dont get much support on this console except the other ones and now we dont even get 2xp.
and don't flame because it will be closed if you do