So many people changing their minds now LOL. Next time 'wait' before you predict. It's now looking like:
Switch OR PS4 (+preorders) > XB1 (+preorders) + Black Friday for all three = EVERYTHING COULD CHANGE. Switch is likely to benefit the least from Black Friday. So, PS4 (higher position has to overtake what Switch already accomplished this month) + preorders (COD/Starwars) + Black Friday V XB1 (much lower position in relation to both the Switch/PS4) + preorders (Of the higher priced XB1X) + Black Friday (although it appears a lower price on the PS4 stands more chance to sell better on Black Friday. If we assume the same trend we're getting here)
If I had to guess, although I'm NOT going to actually call it yet: PS4 > Switch > XB1.
The PS5 Exists.
Essay Pro