PS4 is the best console ever made and you can't deny this.PS4 is the future and the future is the PS4.
If you mean it's the best because it's the most powerful ever well it's only competing against xbone since Nintendo wasn't even trying. This would mean that Xbone is 2nd best console ever.
But really, being the best console ever is all about how good the console was for it's time. In this case PS 4 and Xbone are among the worst ever.