Um, anything that's marked as "4K" has 3840x2160 resolution.

Pretty much any "<something>p" and similar marking is misleading in terms of marketing anyway.

Don't blame it on bad intentions. It just happens to be four 1920x1080 screens for scaling purposes. Much like bytes and kibibytes. I'm okay with this.

No. It's 4K. http://en.wikipedia.org/wiki/4K_resolution