You obviously don't know how to make an argument.
Dooku was more powerul than Anakin. Anakin beat him with a subtle move.
Qui-Gon Jinn (A Jedi master of sixty years) was more powerful than Maul. Maul beat him with a dirty move.
Yoda (900 years of Force knowledge and lightsaber training) is arguably more powerful or close to power as Sidious. Sidious had the upper hand that day.
So you see.... it's not that simple. Try again.