It's a good thing that in the discographies, allmusic makes a different section for compilations. This avoids having the original albums of popular artists among loads of "Best of" samplers.
But I noticed that allmusic has an annoying tendency to put albums in the compilations section that are in fact one session, and should be considered an original album. When you look for the new John coltrane "One up one down" or the Monk/Trane "Carnegie Hall" releases, they are not shown in the album section but among the comilations.