I was expecting around 40-50k for the GoW Pro model, and the same again as standard sales boost. But with those sales numbers, it would seem that many would have chosen to upgrade to the Pro, and the increased number in used consoles would have eaten up the sales of the base model. Otherwise I don't see any real possible explanation to such low numbers

Week 17/April 28th numbers have been added.

Thanks to Golden Week, the PS4 was able to go slightly above last year's week by a little over 8,000.
The Xbox One continues to build on its YoY lead.
The Nintendo Switch was down considerably this week due to last year being the release of Mario Kart 8 Deluxe.

Week 18 (May 5th) numbers have been added.

2018 PS4 continues to fall behind 2017, by another 50k to be exact. And with 2017 showing no signs of slowing down, Sony better do something soon if they want to be up YoY, or this one could be over.

2018 Xbox One continues to grow its lead over 2017, albeit its weekly lead noticeably dipped this week.

2018 Nintendo Switch was able to make up the ground they lost last week to 2017's Mario Kart 8 Deluxe week, and then some. Given the severe stock issues the Switch was plagued with throughout the summer of last year, we can expect to see it to continue to add to its lead for the rest of the year.

I dont think Sony has any plans of making PS4 up YOY considering they are forcasting to be down by 3 million in fiscal year shipments.

Well shoot. It's a good thing I added the Xbox One and Nintendo Switch to this comparison thread, otherwise this would have gotten pretty boring. Though, if 2018 falls behind 2017 badly enough, I may have to bring back my 2016 and 2015 PS4 numbers to make it interesting again.

That actually sounds interesting already. Those years were around 17M for the PS4 and SONY is predicting 16M for this FY. So with the early push due to Monster Hunter World, I could see 2018 landing around 17M too if everything else is on track for the 16M forecast for the financial year

Let's see if PS4 will keep it's downward trajectory while competitors rise.

I just posted the latest Week 19 numbers to all three tables.

In addition, major hardware adjustments were made that I also updated.

The Xbox One and Nintendo Switch were adjusted down considerably. Although, they are both still up YoY over last year. However, their leads are nowhere near as comfortable as before.

The PS4 was adjusted up by just a little bit.
The difference between the three is that the PS4's adjustments were limited to just God of War week and the weeks following its launch. Whereas the Xbox One and Switch's adjustments were made all throughout the year.

Week 20/May 19th numbers have been added.

Week 21 numbers have been added.