Did Sony lie about Killzone: Shadow Fall's resolution?

Killzone: Shadow Fall is the subject of a new lawsuit levelled at Sony, claiming the platform holder is guilty of false advertising.

Killzone: Shadow Fall controversially uses a technology called temporal reprojection to achieve its 1080p resolution. Technically this technology isn't the same thing as "upscaling", but some have argued that its use means Shadow Fall does not run in native 1080p.

As reported by Polygon, a new lawsuit filed in the Northern District California court alleges Sony has and continues to falsely advertise Killzone: Shadow Fall as supporting native 1080p on its website, in videos, on social networks and on the game's packaging.

The suit claims temporal reprojection is not native 1080p but "a technological shortcut that was supposed to provide 'subjectively similar' results", and as such, accuses the company of negligent misrepresentation, false advertisement, unfair competition and fraud in the inducement.

The suit seeks more than $5,000,000, and was filed by Edelson PC, which has a couple of high profile gaming suits under its belt, including the false advertising suit against Sega and Gearbox over Aliens: Colonial Marines.

To refresh your memory, the crux of the issue is that Killzone: Shadow Fall's multiplayer outputs using temporal reprojection. It's extremely common for shooters to output in a lower resolution and frame rate in multiplayer due to the resources required to process multiple inputs and outputs simultaneously.

Guerrilla Games copped to this, and wrote a lengthy technical post explaining how its solution isn't the same as upscaling - a solution many graphics fans instinctively deride.