I'm sure both consoles will do well, but it's going to be hilarious to see the Nov/Dec NPD threads.
I love me a good meltdown.
eh, unless you are predicting the XBONE outselling PS4 or PS4 vastly outselling XBONE, I can't believe there will be any meltdowns (even from XBONE users).
Nov/Dec will be largely uneventful with pretty much (near-)sellouts, close numbers probably leaning slightly in favor of PS4.
If there are meltdowns, I'd expect those in the Jan thread. That's where Wii U fell off the face of the earth and never made the climb back. If one/both consoles end up there.. whoa yeah... meltdown city.