You've yet to prove the times your using as a defense.
You also think Tsunade = Pain, as much as credit as your giving her, why would she
just tie then?
Isn't she like immortal for 24 hours? Nah, didn't think so.
You also haven't explained how she deals with:
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If you honestly think one mediocre shinobi could kill 10,000 zetsu, that's absurd.
Both sides of the war lost half their military strength; 40,000 shinobi and 50,000 zetsu.
Not to mention those zetsu can move about and attack in sheer numbers.
The point is Temari vs 10,000 Zetsu (# you established) would end in her defeat.