I think it'd have to be Pantera. Both very great, very popular bands, but there's more biographies of Pantera than there are of Sepultura.
Metallica
Metallica is definitely more popular than Pantera although Pantera remains the best metal band.
It would have to be Slayer, since they were around before Sepultura and influenced them. Also, Slayer is talked about more by the general public, so they're probably slightly more well known in the world of music than Sepultura is.
Korn is more popular in general than Pantera. However, Pantera existed first and influenced Korn greatly.
Alice In Chains, because they were more mainstream than Pantera.
Sepultura was created in 1984.
Linkin Park
Iron Maiden
Judas Priest
The Best of Sepultura was created in 1989-05.
Attitude - Sepultura song - was created in 1995-10.
Sepultura was born in 1984, in Belo Horizonte, Minas Gerais, Brazil.