I don't know. Waters' voice was very powerful between 1979 and 1985. During that time his range was at its peak and his most difficult vocal tracks were recorded. Since 1987 he's gradually lost power in his voice (Amused to death being his all time worst vocal performance; he sounds dreadful on every track) and has resorted to this old man whispering/rasping vocal style ever since. A great shame because when he was younger he had a very unique voice.Hudini wrote: Roger Waters... He is no less of a singer than he was in Pink Floyd
Gilmour has a more "pleasing to the ear" voice type. He also never pushed his voice as Roger did on "The Wall" and "Final Cut" and "Pros and Cons". Gilmour's voice works best when in direct contrast to Roger's as on "Hey You" and "Comfortably Numb".