A Yahoo Network author wrote an Set-top Box vs HD Antenna article which seems like an odd comparison. Wouldn't a better title have been cable vs over-the-air television for HD picture quality? Also when did over-the-air broadcasts go 1080p resolution?
Set-top box versus HDTV antenna: Which delivers the best sports picture? - Yahoo! Sports
The only surefire way to receive an uncompressed 1080p high-definition signal from start to finish is to use an HDTV antenna. An HDTV antenna usually receives a compression free signal straight from the high definition broadcast point.