Metallica is more popular than Judas Priest.
Metallica
Judas Priest
Judas Priest
Judas Priest
Scorpions were more popular back in the day, but maybe Judas Priest is more popular these days.
The Rolling Stones are definitely more popular than Judas Priest.
To an older generation, Judas Priest. To a younger generation, Linkin Park. However, Linkin Park eventually became more popular than Judas Priest by being more commercial.
Both very popular, but ACDC were much more popular for a longer period of time. So ACDC is more popular than Judas Priest.
Kiss
Nirvana
Def Leppard is definitely more popular than Judas Priest, because they reached a larger group of music fans than Priest ever did.
N Sync
Metallica Has Sold more albums. Where I checked Eminem has sold around 80-100 million, MeAlluca has had well over 100. I believe 110 Million But eminem is one man, metallica is an entire band, PLUS they've been in the industry longer.