As GrayMagicΓ says, they probably have no idea.
As Alph says, it's a Unity 5 game, don't expect too much emphasis on technical aspects of graphics, but rather on art style. The game should be more or less as pretty on any platform with only marginal improvements on the more powerful platforms.
As usual, you'll probably be able to set higher settings on PC, but there's a point at which you have diminishing returns, more and more computing power doesn't result in a huge visual difference, especially for games like this. For instance if consoles have FXAA for anti-aliasing, and you can ramp it up to super sampling on your PC, it's going to look better on your PC, but even FXAA does the job just fine so it doesn't really matter that much in the end.
The worst case scenario would be if the game doesn't run at 1080p and at 60 fps on consoles, that would be the main benefit you'd get on PC.
It is unknown at this time. But don't expect too many websites run comparisons or do benchmarks, it's not going to be groundbreaking...