Will PS4 reach 20M HW sales before Xbone reaches 10M?

[DaltonAbbey]

Depends on two things:

1 - Good performance of the two Driveclub bundles in EU + good performance of (possible) GTA V christmas bundle (worldwide?), all for PS4
2 - XB1 not going past 9.5M in 2014

If both of these happen, it's certainly possible.