It's possible that PS4 may win December and the rest of November but the damage has been done and I don't think Sony will be able to reverse the sales gap in November. For the first time in 2014, I am guessing XB1 will win this month although it can still be a very close call EITHER WAY. In any case, XB1 will sell substantially more than it did before relative to PS4; the question is, whether this will increase from 70% of PS4 to 90% or 130% (rough estimates).
Playstation 5 vs XBox Series Market Share Estimates
Regional Analysis (only MS and Sony Consoles)
Europe => XB1 : 23-24 % vs PS4 : 76-77%
N. America => XB1 : 49-52% vs PS4 : 48-51%
Global => XB1 : 32-34% vs PS4 : 66-68%