Wanna post my opinion about April NPD as well...
First of all: Software
Uncharted 3 sold over 800k back in November 2011 including bundle, and around 700,000 withouth bundle.
It sold those numbers in 4 weeks, including of course the bigger week of the year, Black Friday.
Now, Uncharted 4 will release in 27 April 2015, and has only one week of sales.
I think overall Uncharted 4 will be a bigger game than Uncharted 3, but i think people should get that is not THAT easy sells more than Uncharted 3 first NPD, because we are talking about 1 week of April, a very slow month, Versus 4 weeks of November, the bigger month of the year.
And don't forget digital sales which are now bigger than in 2011
In short, if Uncharted 4 will beat Uncharted 3 first month at retail, i will be very surprised honestly. Not saying is impossible, just, i don't see this happen...
I think ~600,000 for Uncharted 4 first week seem reasonable (retail).
Quantum Break... it's a new IP and all, but i believe MS will do a good work with this game in term of marketing. A bundle is almost a given, and some promotion are possible.
With 4 weeks of sales, i wanna be optimist, and i say 300,000...
Now, about hardware.
Well, i see PS4 wins very easy the first two month of the year, March should be closed than the others months because The Division marketing of XB1, but i still see a PS4 victory.
March is waaaaaaaay bigger than April, and has 5 weeks as well. But with Uncharted 4 / Quantum Break and some deals, is not impossible for XB1 and PS4 sells equal / more than in March.
For example, XB1 sold 236,000 unit in 5 weeks of March 2015 (47.2k weekly sales), and 187,000 in 4 weeks of April 2015 (46,750). It was around flat in weekly sales.
My guess is that, talking about weekly sales, PS4 and XB1 should be flat or a bit down compared to March, and if so, a -20% MOM drop.
Since i see a PS4 victory in March, i expect a PS4 victory in April as well. But there are a lot of thing that can happen and for now we have no idea, so, hard to say now.
But as for now, that's what i predict.