@DP
It would make difference since untrained Savage didn't even know how to use a lightsaber. Do you know that he used a dathomirian axe to kill Halsey right ? And Nightbrothers trained themself to use axe and lance kind of weapon not a lightsaber ? That was his first lightsaber experience, any average Jedi (or even a Padawan) could defeat Savage in a lightsaber duel there due to Savage being unfamiliar that weapon. In this case, of course 1 week would make a big difference.
Just look at his TK, with some torture he was able to lift 2 orbalisk stone in a very short time.
The difference here is learning how to use a lightsaber, of course Savage didn't mastered any lightsaber form, he just learned the necessary basics to put up his strength smoothly into his lightsaber.
Just look at how he is swinging that saber, it is completely sloopy, he even fall by himself because he lost his balance,
http://www.youtube.com/watch?v=O2xe9okSSLA&feature=player_detailpage#t=18
but then he learn to use a double-sided lightsaber properly, which is a big difference.
Dooku : '' You have no technique. Sloppy. But with the proper training, you could be a powerful warrior. You have a natural ability, but we must hone it.''
As you see from this quote, Savage has no skills on lightsaber first, but then Dooku mentioned about ''proper training.'' and ''natural ability''.
Not to mention, we are comparing a training exercise (and his first exercise) to a real fight.