Whose?
For one, we never learn Revan's MO while he led the sith (I didn't at least), so it can fly.OTOH, he tried to kill his rivals at Malachor.
Still, yeah, as nice as it sounds, it's pretty bull.
"Hm, how could we beat the sith? ..I know! Let's kill our best generals, pretend we're all sih then attack the Republic! I'm soo brilliant, if I may say so myself."
I thought that book is older than the KotORs.