I decided to compare U2 and R.E.M., which I regard as the two great bands of the 1980's. For each band, I have taken the ratings of the albums that they released before 1995, according to allmusic.com. Here are the ratings for U2 (five-star albums in bold):
Boy (1980): 4 stars
October (1981): 3
War (1983): 5
Under a Blood Red Sky (1983): 3.5
The Unforgettable Fire (1984): 4
The Joshua Tree (1987): 5
Rattle and Hum (1988): 3
Achtung Baby (1991): 5
Zooropa (1993): 4
Total albums: 9
Total stars: 36.5
Avg. stars per album: 4.06
Five-star albums: 3
Now here's R.E.M.:
Murmur (1983): 5 stars
Reckoning (1984): 5
Fables of the Reconstruction (1985): 4
Lifes Rich Pageant (1986): 4.5
Document (1987): 4.5
Green (1988): 3.5
Out of Time (1991): 2.5
Automatic for the People (1992): 5
Monster (1994): 3
Total albums: 9
Total stars: 37
Avg. stars per album: 4.11
Five-star albums: 3
When I started this entry, I had no idea how it would come out, and I'm fascinated at how close it turned out to be. I would rate Murmer a bit lower, and Out of Time quite a bit higher -- and I never really paid much attention to Achtung Baby. But on the whole, these results seem very fair to me.
For the sake of comparison, here are Bruce Springsteen's first nine albums:
Greetings from Asbury Park, N.J. (1973): 5 stars
The Wild, the Innocent, and the E Street Shuffle (1973): 5
Born to Run (1975): 5
Darkness on the Edge of Town: 4.5
The River (1980): 5
Nebraska (1982): 5
Born in the U.S.A. (1984): 5
Tunnel of Love (1987): 5
Human Touch (1992): 2
Total albums: 9
Total stars: 41.5
Avg. stars per album: 4.61
Five-star albums: 7
Again, that seems fair. But it's harsh on U2 and R.E.M. to put them up against Springsteen. Let's do Tom Petty's first nine albums:
Tom Petty & the Heartbreakers (1976): 4.5 stars
You're Gonna Get It! (1978): 3.5
Damn the Torpedoes (1979): 5
Hard Promises (1981): 4.5
Long After Dark (1982): 3
Southern Accents (1985): 3
Pack Up the Plantation: Live!: 2.5
Let Me Up (I've Had Enough): 3
Full Moon Fever (1989): 4.5
Total albums: 9
Total stars: 33.5
Avg. stars per album: 3.72
Five-star albums: 1
Now that's a comparison that shows how good R.E.M and U2 really were. Tom Petty and the Heartbreakers were a great and successful band -- they were inducted into the Rock 'n' Roll Hall of Fame in 2002, and have a huge fan base to this day. But they were not at the same level as R.E.M. and U2. And, indeed, very few bands were.