I think you are looking at the 60/70" 84x manual not for the 80" which Sharp actually somewhat positions as most similar - in that it's back lit full array - to the 945 line.
From the Sharp press release:
Taking the 80-inch Class to a New Dimension
In September 2011, Sharp launched the industry’s largest LED TV with its 80-inch class LC-80LE632U, providing more than twice the screen area of a 55-inch TV. Today, Sharp is taking the 80-inch class TV to a new dimension with the launch of the new LC-80LE844U. Available in April, the full HD 1080p LC- 80LE844U features a vivid 3D image, employing Sharp’s Quattron technology with full array LED backlighting and a newly developed 240Hz AQUOS LCD panel to virtually eliminate blur during fast- moving video. The LC-80LE844U also boasts built-in WiFi, 4 HDMI® inputs and the new SmartCentral user interface.
Specifically mentions a newly developed 240 panel. And is obviously quattron. Sorry but no way is this the same innards as the 632. The quattron alone makes it different. Whether the 240 is processing or native I believe remains to be seen. In the 945 manuals someone pointed out that there are two different 240 settings. Something like just '240' and another like '240 motion' the latter implying processing.
Edit: here's the link to the press releasehttp://www.sharpusanews.com/docs/Sha...ease_Final.pdf