Ah, I was waiting for this thread.
[360] 125,000
[3DS] 109,000
[PS3]113,000
[PS4] 408,000
[WIU] 102,000
[XB1] 516,000
Ideas behind sales numbers:
Xbox One
NPD results were for five weeks (unlike February's 4 weeks) - which puts it around 330K already. Additionally, March saw the launch of the heavily-hyped Titanfall as well as several price cuts. Prices as low as $399 were reported.
I expect the combination of Titanfall and pricedrops to cause a natural 60% increase in sales over the entire sale-tracking period, which puts it at 516K.
PS4
With the Japan launch behind us and PS4 back in full production (after a short break because of a Chinese holiday). My calculations have shown that Sony actually shipped 285K units to the US last month, slightly below the suggested 286.7K sold (which means: I believe last month's PS4 sales figure has been estimated slightly too high).
With inFAMOUS: Second Son, as well as continued demand, Sony likely shipped 100,000 to 150,000 additional PS4s compared to last month.
Sony will also profit from a small number of sales by customers who were looking forward to Titanfall, only realizing afterwards that Titanfall is not on PS4.
Wii U
Hooray, Nintendo will sell 100,000+ Wii Us - but only just. Nintendo, just like Sony, will also profit from a small number of sales by customers who were looking forward to Titanfall, only realizing afterwards that Titanfall is not on Wii U.
PS3/3DS/X360
Estimates based on very little information.
This is the 2013 thread, not the 2014 thread.
I think, NPD comes out on the 17th which is why a 2014 thread has not been made.
Crap.
For a moment, I did not realize that the year we live in was two-thousand-and-fourteen.