Sure VGChartz, PS Vita did better in USA than Europe in January 2015!
And USA is still undertracked, if PS Vita sales are 39% of the 3DS (Source: NPD), PS Vita sales should be around 36k in USA (not North America!!!). 36k in USA and 23k in Europe are impossible for the Vita, Europe is a much better market for Playstation Vita! Europe & North America are undertracked!

Not even North America, just the USA

This is even more extreme!  

And? Do you think this is an evidence of VGC numbers being wrong and therefore the number of sold units should be way higher than it is shown here?

It's just one month. The numbers are so small anything could happen one month after the holiday. You don't have to keep making threads about this every time, you've already said this so many times I knew it was you after reading the first 2 words in the title. There is no evidence here, just the assumption that European sales must be higher.

It still hasn't been adjusted in the USA either, has it?

Overall the vita is likely over 500k undertracked and that's playing it safe

I'm beggining to suspect Dr.Vita really likes PlayStation handhelds. It's just a hunch, though. XD

Not yet, no. So these numbers naturally have to be taken with a pinch of salt.

Europeans still have the fresh PSP Street model. Expect Vita boost in Europe when Vita Hood is launched.