PS4:

Oct: 1.4M
Nov: 1.9M
Dec: 2.6M

Xbox ONE:

Oct: 420k
Nov: 950k
Dec: 1.7M

Wii U:

Oct: 250k
Nov: 950k
Dec: 2.4M

Wii U December may look very high, but Nintendo always sells especially well in the last weeks of holyday season. And with Smash Bros coming out very late November (US) or beginning of December (EU) good sells troughout the month are practically guaranteed.

I'm going to be way off, but....
October:
PS4: 900K
XOne: 480K
Wii U: 190K

November:
PS4: 2.1 million
XOne: 1.2 million
Wii U: 800K

December:
PS4: 2.5 million
XOne: 1.7 million
Wii U: 1.6 million

OK

OCT - WiiU 280 // PS4 760 // XB1 420

NOV - WiiU 560 // PS4 860 // XB1 680

DEC - WiiU 13000 // PS4 1860 // XB1 1180

Who are these Microsoft haters that actually think the Wii U will outsell the XBO in either Oct/Nov/Dec ? :

^^^^^^^^^^^ in my opinion best prediction so far 

PS4
total: 6m

Xbox One
total: 4m

Wii U
total: 3m

I refuse to humiliate myself.

you meant 1300 for wiiu in december right?:P

Wii U:

Nov + Dec last year was about 1.6million.

therefore I STRONGLY believe it will be at least 2.8 Million this year........maybe even reaching 3m.

PS4
900k
2.3m
3.1m
____
6.3m

XB1
600k
1.4m
1.9m
____
3.9m

WiiU
250k
850k
1.5m
____
2.6m