Iwata and Reggie said it multiple times, There were supposed to be some good 1st and 2nd party games ready for the launch window but they were all delayed unfortunately. They didn't plan it that way. They were supposed to have New Super Mario bros U, Pkmin 3, Wonderful 101 and Zelda windwaker HD for launch window ... they actually had a pretty good 3rd party lineup at launch
http://ca.ign.com/wikis/wii-u/Wii_U_Launch_Games_(US) ZombiU, Nano Assault Neo, Monster Hunter Tri Ultimate, Scribblenauts Unlimited where launch window exclusive 3rd party. Rayman Legend was supposed to be one of those but we all know what happened
... better than the PS4 imho (the best PS4 launch title was resogun ... this is a bit shameful). I've never seen you post positive stuff about the wii u so I guess you're just not a fan in general :/