The first sword of the Nine Calamities Sword Technique, Cease War, and the second sword, Clear Heart, are not considered offensive sword techniques.

However, the third sword, Thunder, is a true offensive sword technique. Once mastered, it can invoke the momentum of a thunder tribulation.

Ordinary lightning attribute sword techniques only borrow the momentum of thunder, but this one harnesses the momentum of a thunder tribulation.

In terms of sword momentum, the two are clearly not on the same level.