User blog comment:Leolab/Retroactive Unfair Battle Enforcement/@comment-5422903-20121209203311/@comment-5422903-20121209204940

Lightsabers are made of lasers. They can and have cut through many things (Even vehicles, which I doubt the shield can do.) And if the can cut through that, human flesh and so much more, i'm pretty sure it can cut through Cap's shield. Vibranium isn't resistant to heat, which  the saberstaff is technically.