Wow my friend...it is much more than that. Sion and Nihlus stripped her of her power, and betrayed her. It is much more deep than that.
And the part where you face Revan, isn't the real Revan. It is a test used by Kreia, and for her to see if you had to face Revan (The real one) and if you would actually fight back...I think. I may be wrong though.
*edit* Heh, well before I made this thread, I literally
just beat KotOR (again). I don't think she says that you have surpassed him...I think she says that you are as strong as him...sorry even though I just beat it, I can't remember exactly what she says...I could beat it again though just to find out.
-TFS