Just some info on NFC vs AFC, then and now.
From 1981 to 2000, 15 of the 20 winners were from the NFC. 9 unique teams, and 5 had multiple SB appearances, and 4 out of those 5 had multiple wins.
49ers 5-0, Cowboys 3-0, Giants 2-0, Bears 1-0, Rams 1-0, Redskins 3-1, Packers 1-1, Eagles 0-1...