The SE was shown in cinemas though, so the SE changes were created a higher resolution. ;)
That being said though, back in 1997 I don't think scanning 35mm was done at anything higher than 1080p. Given that 1080p wasn't even a standard back then (and considered how "low res" digitally scanned shots from the 90s looked - see Jurassic Park, Forrest Gump, etc.), I doubt that the OT-scans done for the SE are existing in a format that's rivaling modern Blu-rays quality-wise.