ROTJ Sidious vs ROTS Yoda 9/10??

Originally posted by Darth Thor
But I thought none of that power manifested itself until DE.

...

I would think that Sidious sitting on his ass for all those years without touching a saber would put him out of his dueling prime when faced with RotS Yoda. (Similar to Old Ben vs RotS Dooku)

Obviously he beats Yoda in a force battle at this point, and probably all out 8-9/10.