It is a MVA panel. Most likely, S-MVA. IF not, then A-MVA with PSA. In order to be sure, the panel code, which declares the manufacturer is on a sticker at the back side of the panel. (OEM cases are excluded). Example: http://forum.ixbt.com/topic.cgi?id=62:11088:833#833
I have a 40R1AF6E panel and a 40A1AF6E panel in two samsung 40ES6300 TVs.
From what I've read the A panel is the samsung and the R one must be from AUO.
Do you have any more information on that AUO panel? What technology is used and is it better or worse then the samsung technical? My personal impression is that the AUO has better viewing angles and much more consistent backlight, while it's much worse in 3D and the colors seem a little less brilliant.