There will presumably be games we don't know about to pad out the year as well, like the third exclusive Sonic game. Shin Megami Tensai x Fire Emblem was pitched for 2014 as well, if I recall correctly.
But like TK14 says, Kart and Smash and Nintendo's two biggest guns, and they know this, so they will space them out. If Kart's arriving in April-May, Smash won't be until November I reckon.