I think it is time to see how accurate my prediction was... NPD February released and some big adjustments are made again... the only week missing with official data will be the first week of March for the US prediction but I will use the VGC estimation for that.
1) Over 500k in US Before Titanfall Launch
Month: PS4 - Xbone = GAP
November: 1,138k - 909k = 229k
December: 863k - 908k = -45k
January: 271k - 143k = 128k
February: 285k - 258k = 28k
March 1st Week (VGC): 45,447 - 48,101 = -3k
Overall GAP in US Before Titanfall Launch: 337k
My prediction was 32% off from the real numbers. What changed? The good NPD February for Xbone was unexpected for me... while January was the numbers I expected in February the numbers are way different... I expect a 100k difference in February giving the real number close to 450k gap instead the ~340k gap you can see right now... even if after adjustments the March 1st Week in VGC changed to PS4 ahead some k's the situation will be the same with the final GAP near ~350k.
Another issue happened too... Sony stock in US was way behind what I expected... I was predicting at least 200k per week in stock every week but Sony just pulled some 150-170k per week.
2) Over 3 Million After Japan Launch
I admit this sentence was a little ambiguous because it can mean the week of Japan launch or the week after but in both case my prediction was close to 500k wrong.
Japan Launch: 5,901,216 - 3,599,852 = 2,301,364
Week After: 6,078,025 - 3,679,271 = 2,398,754
My prediction suffered after Sony just shipped for Week 1 in Japan 350k units of PS4... I expected ~500k in Japan for Week 1. After that the good sales of Xbone in February NPD make the gap grow slower than I expected.
In % terms my prediction was 20% off from the real numbers.
Overall PS4 crazy good... 20% lower than I expected/predicted was not that bad because it suffered more supply issues than I expected... like I said before I expected Sony to ship 200-250k units per week but they ended shipping 150-180k.
PS4 is just starting the gen killing every other consoles in terms of sales... the GAP will increase week after week... this gen will be good again 
Have a nice read, predictions and crows guys.
I like to do that so much.
