e.g. compare http://classic.musicbrainz.org/taglookup.html?artist=morning+musume&release=first+time&track=ai+no+tane and http://musicbrainz.org/taglookup?artist=morning+musume&release=first+time&track=ai+no+tane
In mason, the right artist/release/track is the first result, followed by the same track on the artist's other releases, which is what I would expect.
In ngs, the first result isn't a match for the artist, the release nor the track. The second result is the single with the same name as the track. The real match for that artist/release/track combination is only the 11th.
There is no column for the track name like in mason (maybe it's not even searching for the track names) and it also says "Found 14,152 results for """