Xeno 3D have 500,000 userbase VS +7,000,000 PS4.

They've swapped positions a few times, it's a tight race.

The Wii U's performance is really interesting.  Has it finally reached a tipping point for a large number of people?

i'm telling you just give the wii u a nice price cut and it will do great

Is there even a reason for that weird Wii U rise? Confidence breathed into the console by the Direct? The Smash Ballot thing going viral and pushing awareness of it alongside 3DS? Or maybe people finally noticing it exists because of the overflooding NIntendo is doing with those amiibo commercials, that also advertize Wii U, Kirby and the Rainbow Curse, MK8, MP10, SSBU, Yoshi, Captain Toad, and New 3DS?

Batman out of stock already, Amazon seem to be getting less stock every time

I think it's a snowball effect of a number of variables.  Nintendo's competitors - in terms of game developers, not just Sony and MS - stumbling with key releases while they have maintained relatively high consistency has probably helped put them in a positiive light.  The Direct probably helped counter the doom and gloom.  Smash got a decent ad campaign and of course has a lot of coverage around the net so it's no doubt raising awareness.  Smash Ballot is creating a lot of buzz.  The price on Amazon is stable at or below MSRP.  Word of mouth is pretty strong.  I know people are giving him a lot of flack right now, but even Angry Joe - despite being upset with Nintendo - has said numerous times that the Wii U is the most fun eighth gen console for him.  So yeah, I think the Wii U has just got a lot of positivity coming in from various factors. 

Hope  that moemntum lasts for a while, then gets elevated again with splatoon.

MCC bundle seems to finally be gaining some momentum. When was the last time it was in the top 30 before now?

Bloodborne seems to be sticking to the top 10 like a Nintendo game.

Wii U andand Xenoblade climbing in the monthly. Wii U has gone from 75 to 66 and Xenoblade has entered the top 20 at 19. With Smash doing really well, Mario Party still doing respectably, Majora's Mask still holding in the top half of the chart, and other games and hardware holding their own, April is looking really solid for Nintendo if these trends indicate anything.

Another multuplat doing wonders for ps4. MKX suit pretty well with ps4.