Bruce Springsteen has sold more albums than Judas Priest ever could.
If you mean "Another thing coming" Judas Priest.
Judas Priest
Judas Priest
Judas Priest
Metallica is more popular than Judas Priest.
The Rolling Stones are definitely more popular than Judas Priest.
Scorpions were more popular back in the day, but maybe Judas Priest is more popular these days.
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.
Kiss
Nirvana
Both very popular, but ACDC were much more popular for a longer period of time. So ACDC is more popular than Judas Priest.