User blog comment:Leolab/Retroactive Unfair Battle Enforcement/@comment-5422903-20121209203311/@comment-422690-20121210140210

First off, Truncheon, I suggest you try to understand that we are comparing two fictional universes here. Since lightsabers do not exist in Cap's universe and vibranium doesn't exist in the Star Wars one, we have to do our best to compare based on what we do know. Since I am far more familiar with Star Wars than Cap's universe, and since we do know that Lightsabers are made of plasma, this is one of the more efficient ways to determine this. If I was more familiar with Cap's, then it would be better to could compare vibranium to cortosis/phrik/beskar/whatever new bull George Lucas has come up with.

That is the rationale behind it. Until we actually obtain lightsabers (not happening, magnetic fields do not work that way) and Vibranium (more in the realm of possibility, but still highly unlikely) we have to compare in this manner. I don't know enough about Cap's universe to vote on this, so I'm simply explaining what people use to determine.

Also, Lightsabers could be more powerful than Thor's hammer. We just have no ability to compare.