So KAA used fan translations for their release of Gungrave? If KAA just used ripped R1 subtitles (you say the source is R1 DVD, AFAIK they usually use borrowed fansubs with their R2 rips) like AHQ/A4E, than the AonE version shouldn't be replaced (following the BoxTorrents's policy to always keep a fansub release), right? And generally speaking about quality: video quality is not the synonym of the overall quality of the release, even if some think it is.

And re: comparing video quality of 275 MB / episode DVD rip (KAA) VS 175 MB / episode 2003-4 DTV rip (AonE); if KAA's version hadn't been significantly better, it would have meant there's something terribly wrong with their encoders.
By the way, shouldn't this thread belong to the Uploader's Forum section instead of this one? Not all people check all the threads on BoxTorrents's forums. I, for one, nitpick only on the first three sections of this board.