There are some who would say the decision to bring former Wii U exclusive Rayman Legends to other platforms was a smart business decision. There are other, slightly crazier people—like those in this video—who would use the word betrayal.
This is 17 minutes of user comments left on Rayman's Miiverse page, showing that, well, fans of the series who also own a Wii U aren't exactly happy about the decision.
I get it, the delay stings, but it's a delay. Not a cancellation. Given other major publisher's stance on the Wii U they're lucky they're getting a promising third-party title at all.