Even though the collection received mostly positive reviews (8's, 9's and 10's), the Gamecube version received slightly negative reviews for its lack of extras and for not including the remixed audio for Mega Man vol 1-6.
The Xbox version also got slightly higher reviews than the Gamecube and PS2 versions, but ended up receiving a score of 8.0 from IGN due to it's delayed release.
The Anime episode is different between the PS2 and Xbox versions. The PS2 version uses the first episode of the Ruby-Spears produced Mega Man series. The Xbox version uses the first episode of the Mega Man NT Warrior series.
The Xbox release of this collection gathers the Anime episode and remixed soundtracks from the PlayStation 2 release and the interview clip from the GameCube release, and puts them into one console version, making the Xbox version of Mega Man Anniversary Collection the most complete of the three console versions!