The age of loyalty is gone.
Do not buy a PS4 just because its a Playstation.
Let the games and features alone sell you once they are announced.
I am very wary as well, but need more information to make an educated decision.
So far its not looking too good for Sony, but you never know.
If the other consoles are worse it could be a matter of choosing the least crappy console next gen instead of the best, LOL.
Finally, the structure of my question is that you would have to disprove every possible outcome to be correct and I would just have to have one that would likely be beneficial. That's statistically in my favor by quite a bit.