logic suggests it wont.
eg, if the consoles were at 5m and 8m (just to make life easier), and sold roughly the same:
5m 8m (half is 4m, xbox 1m away from being half)
6m 9m (half is 4.5m xbox 1.5m away from being half)
7m 10m (half is 5m xbox 2m away from being half)
if the ps4 sold 500k more:
5m 8m (half is 4m, xbox 1m away from being half)
6m 9.5m (half is 4.75m xbox 1.25m away from being half)
7m 11m (half is 5.5m xbox 1.5m away from being half)
Basic maths, basically.
Remember, theres a 5 year old and a 10 year old, and th 5 year old is only ever half the age of the 10 year old for that one year, in 30 years they would be 35 and 40, the distance between being half of something grows larger on its own because thats just how numbers work.
It would take a hefty surge in sales in a very one sided way to mke ps4 hit the hallowed "twice as much" thing, and providing the xbox one didnt flop, chances are that by the next sales data the ps4 would lose that status, and slowly move further and further away.
