Doubt about Knife Sling ecc

Some wapons has this wording: "your Attack action counts as versus against an opponent’s Attack ad is indipendent against Maneuver.
This means that, for ex in Attack vs Attack situation, my roll is a versus but that my opponent still roll indipendet or both of us roll versus?

For ex:
Attack vs Attack. I have a Knife and my opponent a Sword.
I roll 5 success and my opponent roll 4.
Case 1: I reduce his disposition of 1 and my opponent reduce my disposition of 4
Case 2: I reduce his disposition of 1

In an Attack vs. Attack in which you roll 5 and your opponent rolls 4, you reduce your opponent’s disposition by 1. He does not reduce your disposition.

Read the description carefully. It’s actually describing two different cases.

  1. If you choose Attack and your opponent also chooses Attack, the tests are Versus.

  2. If you choose Attack and your opponent chooses Maneuver, the tests are Independent.