Eh, I know what upscaling is.
My argument is, that since they must have the HD renders of the original AC on their workstations, there would be no need to include upscaled SD footage with the native 1080p stuff.
There is a horrible amount of Aliasing though. In several scenes really. I would still consider the detail HD but they could've done a better job at anti-aliasing the video some more before releasing it =\