Business is business. Third parties arent making returns on their early WiiU HD twin porting support, CODBLOPS selling below 378 copies in the UK this past week, hardware that doesn't exactly make the porting process lickety split quick, extra development resources required for GamePad gizmo's etc. Nintendo have given developers and pubs plenty of reasons to not be fans over the years, so no, its not irrational at all.
For the 'hardcore' gamer this coming Q1 and Q2, other than Rayman Legends, the WiiU just may as well have not launched at all.
im confident that at the end of the days the launch games will have reasonably high numbers . just like with every console