Journey, Foreigner, & Styx - The Grand Karaoke Tour 2011

None of these bands have their original lead vocalists that made them famous. Yet, they keep on touring as if they did.
I think Styx should be headlining the tour since they actually have Tommy Shaw and James Young in the band, who sang lead vocals on some of their songs.
How do they determine who headlines the tour, when none of the bands have their original lead singer? Is it based on their popularity from back when they had their original lead singer, or on how well their new lead singer can sing karaoke today?

I think Styx should be headlining the tour since they actually have Tommy Shaw and James Young in the band, who sang lead vocals on some of their songs.
How do they determine who headlines the tour, when none of the bands have their original lead singer? Is it based on their popularity from back when they had their original lead singer, or on how well their new lead singer can sing karaoke today?
