What exclusives? Big 3rd parties generally don't make exclusive titles anymore unless console manufacturers pay for exclusivity and even then, it's usually timed exclusivity or DLC. Nintendo needs a strong enough 3rd party lineup to keep their fans from jumping ship or also buying their competition's machines because the vast majority of exclusives are now 1st party titles.
The problem Nintendo has with that right now is that if you
care about 3rd party games like those in that demo reel, you probably
already own one of the HD consoles. You're not going to wait a year for the Wii U to get launch-era ports. You're just going to grab them for the Xbox 360 or PS3 as they release. And since Nintendo didn't show
any 1st party titles (and given that the ones they had on the Wii weren't exactly spectacular compared to games on previous Nintendo consoles), I'm struggling to see why I would buy this machine. There are no 3rd party exclusives yet aside from some nebulous content for Ninja Gaiden 3, and the only 1st party exclusive we've been told about hasn't even started production yet (Smash Bros.).
Oh, and in the meantime, Nintendo has summarily abandoned the Wii, content to get a few late-comers like Zelda out the door before pulling the knife out of the system.