I don't really believe any numbers posted on the site. Treat them as a big, wide ballpark.

Well if you are questioning the increase it's not out of the question to get a lift. If you are questioning 71K (lets face it questioning 47K in NA) then it might be a bit on the high side but that would also mean the 14 June number is a bit on the high side too. However I doubt 14 June is high because to me that 70% boost was on the low side. It does more align with my expectations for Kinectless boost for the 2 week cumulative effect to pretty much come up to my prediction for the Kinectless boost.

What would surprise me a little is if Xb one stays above 60K through the summer. Given the price cut came at the cost of losing what was previously considered a center-piece of Xb one functionality. OTOH as the market seems to have decided Kinect is not worth the price, doing a reset might just grab the market's attention and substantially re-rate Xb one sales. Though if Xb one's short term peak is 71K and PS4's summer trough winds up around that or slightly above the dumping of Kinect will probably not have reached MS expectations. I do think it's made life a lot easier for MS's big exclusive software to help push more consoles.

Maybe it's the UFC boost.

Possibly 

I don't believe it's exact, but I believe it's not extremely far off, why?, are you dissapointed, op?

I find it hard to believe but I don't think this sites numbers are correct. I think its under tracked. 

I think they are overtracket, but not very high. Something about 65k WW sounds legal, price drop effect and a new game release.

Besides, when will we see the NPD sales?

I think it's overtracked.

No, because for VGChartz, XBOX ONE sell much more of NPD.
Example:

April:
VGChartz=215,000
NPD=115,000

May:
VGChartz=105,000
NPD=77,000

I predict that in June VGChartz will repourt 140,000, and NPD between 100,000-120,000... because i'm Mr Octimist: 125,000!

Thank you Drake_tolu, now we have the proof xD