Bernard, I think the reference to it not being a 1080p set applied only to the fact that it wouldn't accept and process an actual 1080p input signal(e.g. some of the new HD DVDs, which also have a 1080i output however). It's a progressive scan set and its "native resolution" is 1080, therefore it has to display everything which is input at 1080p, and is a 1080p set. With a 1080i input it deinterlaces it to 1080p, although at least in theory a "real" 1080p input should be slightly better than 1080i deinterlaced to 1080p.
