Poll
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Any way, I think Obi 1's soresu would be a good counter for Depa's vaapad. And although Mace said that her vaapad rivaled his own, that doesn't mean her swordsmanship does, therefore, she is not necessarily more powerful.
Obi-Wan can block 20 strikes per second I believe, and soresu is the ultimate defense, hence, Depa's powerful and quick blows will most likely not be able to break Kenobi's defense.
And soon, Kenobi will pinpoint a hesitation in Depa's strikes, and will attack, possibly using his other form, ataru.
I believe he stated that her swordplay had exceeded his own, with the event in question having occurred several years prior to Shatterpoint. So her technical ability is likely superior to his own, although she lacks his vast physical strength and advanced shatterpoint ability.
And as far as Kenobi is concerned, it was said that twenty strikes per second "overloaded" his defenses.