Acoustix beat 139th St. Quartet by only 20 pts. in 1990.
Acoustix had 4586 and 139th St. had 4566. I do, however, agree with some of the comments saying you can't compare that many years difference. It changes way too much (the singing style, judging, arrangements, etc.)
If you look up "The Entertainers" quartet, I posted a couple of songs from them. Freddie sang baritone with them. It is a couple of funny "Freddie-like" routines they do with Last Night Was The End of the World and Heart of My Heart.
nice song package!