Err, actually not more successful than the smiths at all by any meaningful way of measuring ie critical acclaim or record sales. Occasionally the solo live audience has been close to the smiths but that's all melted away rapidly in the last two years, and we all know why. In the meantime, Marr goes from strength to strength.
"Occasionally the solo live audience has been close to the smiths" - what on earth are you talking about? Morrissey has played to crowds all over the world far greater in number than what the Smiths achieved.