I don't care what anyone says. Revan is a monster. No true Jedi would ever consider complete genocide of an entire group of people. If what HK-47 is true and 97 some percent of the imperial population is subject to extermination then how many of those people are civilians? He is completely obsessed with destroying the empire beyond all reason.
Revan seems to be the type of guy that the ends justify the means. If he was truly a master of the force he wouldn't have given in to the dark side halfway through the fight to beat us. He is incredibly overrated. He's cool but people just worship him for no reason.