The fight wouldn't be at 175 though. Moorer chin was average at best, and his defence wasn't that good either, so there is a good chance Sanders stops him fast.
Moorer rises from an early knockdown, or 2, to stop Sanders, or maybe wins a decision as he fights cautiously (a la Holyfield 1)
Sanders would no doubt be dangerous early as he always was but Sanders was just as chinny as Moorer. So early on it would be who landed first but once beyond 3 rounds Sanders would inevitably gas and get stopped. Moorer while just as vulnerable was simply on another level in terms of skills and resume. Prime Moorer would have never lost to guys like Nate Tubbs and I'd favour him over Rahman. But I can't see Sanders beating guys like Holyfield, Foreman or Tua who all beat Moorer. Moorer stops him in the middle rounds.
Sanders at his best could definitely KO Moorer... Sanders was a criminal underachiever, the hardest hitting southpaw in the history of the division. The Sanders of the Wlad/Vitali fights would have a very good chance at knocking Moorer out.
Sanders punching power was concussive, he was a real puncher and Michael Moorer ought not face a real puncher! Sanders by brutal KO! BRUTAL!!!