Guitarists in some top bands can compete with ACDC, but the lead singer is much inferior. Rock lead singers who can compete with ACDC lead singers are also rare. Steven Taylor of The Blacksmith in the Air is one of them, but the guitarist of The Blacksmith in the Air is not as good as the guitarist of ACDC.
The conclusion is that the combination of an excellent guitarist and an excellent lead singer like ACDC is rare in the world.