I don't know. Not to me. I mean, they did alright, at least they had something to show for their console. There's this guy I have on Facebook, great guy and all, really cool, but complete Nintendo fanboy. Anytime I say anything remotely negative about Nintendo, even if it's in the name of love and wanting them to do better, he's right there telling me "Eh, Nintendo doesn't need you. They won't listen to you because you're not important enough."
Anyway, he has been overly excited about the Nintendo reveal stuff. Personally, I think it's because it finally justifies his purchase of a WiiU, and he wants to convince everyone that it was a fantastic system from the start. However E3 still hasn't convinced me.
The WiiU is an alright system, but it still doesn't have much to offer. It's library is alright, but it doesn't have a very wide variety. Does it have a few great games? Of course, if you're into that sort of stuff. Mario, Mario Kart, Super Smash Bros, maybe a couple upcoming Zelda games, but unless you're an obnoxiously dedicated fan and really enjoy the same IPs over and over again (which by the way, stop trying to convince me they are COMPLETELY different because they added a few new power-ups. It's still another Mario game.), it's still not enough to convince me the WiiU is really worth it, because I haven't played a Mario game since Sunshine, and I missed out on most Zelda games after Wind Waker.
Is this all to say I think Sony or Microsoft did a lot better? No, not at all, but as it stands right now, they still have more to offer to me than Nintendo does. If Nintendo did a better job with third party, as well as their very well crafted first party games, I'd say Nintendo would have won this console generation no contest. But they don't. They try, but they dropped the ball early on, so now third party developers don't even want to try. I'm sticking with my souped up gaming PC until the PS4 has a bit more, and then I might buy one of those, and live very happily with my 3DS. Nintendo has done very well with the 3DS, even if I don't like it as much as my PSVita, and as long as they continue to throw a few Zelda games and other first party titles there, the WiiU will still be mostly useless to me.