Tbh Sakura’s feat is insane lol. Chiyo could initially counter Sasori because she was a puppet master but Sakura learned how to do it in the course of a single fight.
:risicheck:

Surely you don't think Sakura is anywhere near Zabuza in speed and skill, especially since Sasori will be fighting a ghost

Zabuza gets his sword removed by iron sand, Haku is literal fodder apart from her space time jutsu, Zabuza doesn’t have the speed feats to consistently dodge iron sand.
Sasori had trouble targeting Sakura and Chiyo while they were hiding behind some rocks, catching Zabuza offguard is nowhere near an easy task. Haku is literally stronger than Kakashi according to his testament, if he locks Sasori in his mirror jutsu especially in round 1 it might get real ugly
 
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