It's likely that some PC enhancements will be used on the PS4 sku, but if the game scales high I don't think it's possible for the PS4 version to integrate all the bells and whistles.
Remember there is only about 50% power difference between the xbone and the PS4. It is very common for visual upgrades to have a 20-25% hit.
It would not less us appreciate the LOD gap but the model themselves would be identical, just like MGS 5 showed significant LOD advantages of PC even at 1080p.
I'm sorry but your attempt at damage controlling the PC advantages with the 4K does not work. Even at 1080p the draw distance will be higher, confirmed by some SE guy on IGN.