The Emperor as of The Phantom Menace vs. the grandson of the Chosen one.
Force, sabers, all out
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
Caedus, I don't think Palpatine was that strong yet. Then again he does have his Galaxy level feat with Plagueis.
__________________ "Vader's pulse and breathing were machine-regulated, so they could not quicken; but something in his chest became more electric around his meetings with the Emperor; he could not say how. A feeling of fullness, of power, of dark and demon mastery -- of secret lusts, unrestrained passion, wild submission -- all these things were in Vader's heart as he neared his Emperor. These things and more."
Palpatine was without a doubt strong, but I don't think he was at his prime, until later. That's why I went with Caedus. Sidious at his prime would win, imo.