I never said that the sith soldiers were cloned from Revan.
I wasn't going to reveal this because it was a major plot twist but, For lightside Revan you are led to believe he is behind it when in fact at the end of the game you find out Revan was captured and used as the cloned specimen but not willingly. He is captured and used as the clone "doner" so to speak, because his remarkable power. Who would possibly be able to do such a thing? It could only be one man, a man with a heart as cold as stone and a soul as black as Mississippi molasses. A man with the time, the know-how, and the resources to pull off a hit with such silent precision. A man whose name is synonymous with evil:
Gluupor.