I think the Wii U has a good chance to pass the Vita eventually, but what is most concerning is how long it is taking for it to happen, and the Wii U doesn't have a lot of time left before the next console comes out. I figure the Vita will eventually pass it in the end from being in the market for so long. Sony doesn't drop support for their hardware even years after a successor has been released.

Except that sony has already stopped supporting the vita in any meaningful ways.

That is sort of true. While Sony themselves are dropping support for it, it is still getting plenty of 3rd party support, mainly from Japanese 3rd party, which some of it may be from Sony themselves. So that'll keep it ahead of the Wii U for the time being.

The Wii U is less then a million now.

Vita will outsell the WiiU by multiple times once a 4G Vita is avilable. If Sony adds 4G, an extra gig of RAM, and throughs the Z3 battery in the Vita 3000, they will have hands down the best mobile device on the market. PlayStation Network is getting bigger and bigger, and Sony can offer more content than any other company thanks to the masssive library PlayStation has built in the last 20 years.

WiiU has nothing to back it up beyind gamez, and that is a major issue going forward. Any device that can not offer a powerful digital store and network will never succeed again. Hopefully, with the NX Nintendo will figure out some way to expand the system beyond games, and make it worthy of being used throughout the day.

Can't be! WiiU had all the metons of Nintendo bran of quality 1st party while Vita just had fewer renowned games that barely sold over a million!

Don't most people aside from core-ninten fans not care about those same 1st party brand games? :P Vita does get a lot of games, even if they are not huge sellers.

So retailers are reordering more Vitas than WiiUs each year although the WiiUs are selling better or what do you want to say with your fix?

The psvita has been on the market about 10 months longer than the wiiU, and has sold 800k more units as of march 28th according to vgc numbers. That's just over 37 months on the market, and the wiiU has had 28 months on the market. The ps vita has averaged 280K, and the wiiU has averaged 340k a month. Assuming this exact rate, the wiiU would outsell the vita in a little over a year. Current trends over the past couple months show the vita selling slightly better, but if you look at trends, this would be the third time the psvita outsells at around this time, and then the wiiU makes up the slack at the end of the year. The wiiU is going to lose support in a year and a half I predict, and the vita will probably be around for a while because of the fact that it's likely Sony's last handheld. Given all of this information, it's honestly a complete toss up, and I can't really say which one I think will pull out ahead.

Of course, shipment are not sales.

In 2014 Vita was overshipped because the TV version released (and was a super BOMBA with just 50k sold in the US Oct+Nov+Dec), and WU undershipped, considering was even sold out in some market/site...

WU in the US > PSV US+JP ; confirmed by NPD and MC.