Quoted:
jedi are buddist monks of space they would crap their pjs at the first sight of thors hammer.

Quoted:
on a treadmill?

Quoted:
A powerful force user wouldn't need a light saber.

Light sabers were rendered useless on Mortis for the most part, where Anakin, Obi-Wan, and Ahsoka prevailed at the end of the day - mostly because Anakin was so strong in the force.

Sidious never used a light saber, except when to defeat the Jedi that came to arrest him in RoTS or to train Maul.  He used force lightning and manipulation because a lightsaber was beneath him.

To answer the question, no a lightsaber couldn't break Thor's hammer, but if Thor faced a force user worth a damn, he'd get fucked up.

Quoted:

You mean right up until Darth Allegory got stabbed in the fucking back.