Riddick Bowe v.s Michael Moorer 1994

Bowe would knock him out.
To put in perspective their careers in 1994 - the Bowe who narrowly lost to Holyfield in '93 would have EASILY beaten the Holyfield who turned up for the Moorer match six months later - and that narrow win for Moorer is his HW career highlight !
Bowe was better than Moorer, even at his worst.
(Even the Bowe of the Golota fights would probably "do a Foreman" on Moorer.)
The styles favour Bowe, it's a matter of strength and power and warrior mentality.

Moorer was a decent boxer though, a good puncher, and a southpaw. He might put up a decent fight for a while, but he wouldn't survive the distance.