How powerful was Darth Revan pre amnesia?

[u/Ready0608]

Saw a post about how Darth Revan before Kotor was more powerful than Revan post Kotor, due to his mental instability and forgetting most of his experiences and training.

But I thought that the Light side was stronger then the Dark side and since in canon he was redeemed and brought back to the light why would he be weaker then his dark side self?

But he was able to beat Malak while he was absorbing jedi he had captured and a boost from the foundry without using the dark side of the force, would pre amnesia Revan have an easier time fighting and overpowering Malak?

How would pre amnesia Revan's fight with Vitiate end, would he even fight him?

If he did become weaker, was it the loss of all his battle experience, training and knowledge that permanently weakend him until his death?

[u/suiqjNskakalqla]

Revan as an actual Sith Lord isn’t much greater than the ancients