StingingVelvet: I would definitely agree they did the best job at selling people inclined to get the system to go out and do it. I doubt anyone not already interested in Nintendo-style games will suddenly be interested, though. If we're talking swaying generic console gamers into getting a next-gen system to encompass the popular tastes of the day, I would say Sony is still winning that war.
Definitely. People who don't like Nintendo games won't suddenly turn into Nintendo fans. But for people that do enjoy Nintendo classics, there's no denying that Nintendo offered the best and most original games. Splatoon is a pretty original concept, Captain Toad seems like a fresh take on the 3D platform genre and Mario Maker was really cool, well, Little Big Planet was the first one to bring the concept of making stages and sharing them online to consoles, but i guess there are a lot of people out there who wanted that in a Mario game (just look at how many romhacks the Mario games have, it's probably the most modded console game ever). I certainly did. And then you have classic franchises making a comeback, like Starfox, Mario Party 10, Super Smash Bros, an open-world Zelda, Kirby, Yoshi. That's everything a Nintendo fan could ask for. Oh, and there's Xenoblade X which looks awesome.
But to people who don't enjoy Nintendo games i think Bayonetta is the only game that looks appealing. Bundling it with the first game was an awesome idea, seriously.
But if we're talking about generic games that sell a lot, then i guess Sony takes the lead.
Arkose: It's hard to justify buying a whole console just for the occasional Nintendo game; third-party support is essentially gone forever (I don't think any of the third-party games shown at this E3 have Wii U versions). Nintendo haven't even delivered on all of their own IPs--the new Zelda is probably at least a year away.
It's hard to justify purchasing the Wii U as a "first option" because of the total lack of third-party support. But as a second option, it is the best choice in my opinion. For example, i already have a decent PC, so if i had to choose just one single console, i'd certainly go with the Wii U since most third-party Xbone and PS4 games come out on PCs anyway.