FrothByte
Nailcutter Massacre
Originally posted by Psychotron
In real life if a sword smashed into a shield made of the same material it would shatter before it does anything to the shield. Therefore, Thanos' sword is made of a material that is far more durable than Captain America's shield. Now, we've seen an angry Thor slam Mjolnir into the shield and it didn't even dent it. It's safe to say that breaking the sword is more impressive than breaking Mjolnir in my opinion. That doesn't mean that Wanda is more powerful than Hela or anything, because Hela broke Mjolnir with a smile on her face, while Wanda struggled somewhat.
Yes, I believe it's clear that Thanos' sword > Cap's shield. That, however, doesn't mean it's tougher than Mjolnir. Remember that Thor only ever hit Cap's shield once with full intent, and that he struck it right at the center where the shield is toughest. Thanos hacked at the edge of the shield, not the center, and he only managed to damage it after repeated blows.
There's also the fact that Thor isn't physically as strong as Thanos, and that also needs to be considered.
And again, breaking a sword blade is much easier than breaking a hammer's head, presuming both are made with the same metal, with the same tempering, with the same level of craftmanship. Breaking a sword blade doesn't mean you can just as easily break a hammer head.