Comparing Bruno Mars to Hillary Duff is like comparing a Porsche 911 to a moped.
Bruno is a Grammy Award winner who is incredibly talented. I wouldn't even call Hilary a singer.
"So Yesterday" definitely describes Hilary's career. She was a cute teenage actress and I wish her well but let's be real here Luis. I can't believe you would compare H.D. to a Grammar Award winner like Bruno.
Actually I was comparing him to B.o.B. and Taio Cruz in that they all sound exactly the same time to me and I have no use for soundalike "artists." I really dislike them. They just don't do anything for me, yet they keep getting played all the time on the radio. I can't do anything about that but I can listen to some feel-good classic songs. Say whatever you want about Hilary's vocal ability but her songs still have more value to me than the aforementioned three and that will probably always be the case.
On another note I didn't know Bruno Mars won a Grammy. I don't think he deserves one (or conversely, if he deserves one then so do his soundalikes), but whatever.