The Kiss comparison came from having the same management (certainly not musically justified, heavy-handed as Kiss were, while Starz' songwriting was even a little clever
in a sort of Queen'esque or perhaps even Queensryche-y way), but I'm with Tom, imagewise they were closer aligned with Aerosmith though they were much less blues- and more power pop influenced plus of course that copious harmony guitar leads thing which the Bostonians largely eschewed. Actually, they were not so far away from what Bon Jovi would be doing (with enduring success!) a few years later. When I first heard Living On A Prayer on the radio I thought to myself in the car:
"Darn, does that sound like a Starz chorus!" But then Jon Bon Jovi was a fan, practicing Starz songs in his garage as a teen. New Jersey Mafia, what can you say!
Angel and Starz together at one gig, now that is two 70ies "Almost Famous"es lumped together!
They should have added Starcastle and Legs Diamond to the bill.
For the record: All four were fine bands, just unlucky. When it comes to melodic hard rock with a slight pop tweak, the US of A is pretty much unbeatable at its own game.