By full 1080p HD I assume you mean 1920x1080 blu-ray compatible resolution? My regrades have exactly the same resolution except with the top and bottom black bar cropped, as is standard with 1080p mkv releases. They are cropped at the same time as they are regraded so there is no down conversion, no loss of image quailty.
Superman Returns 1080p Mkv Vs Blu-ray
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