Hmm well lets see....
Kusanagi couldn't cut her in half, and its a legendary weapon like Totsuka said to cut anything..........
Orochimaru never tried to cut her in half. The closest he came to doing so was
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, where he was trying to kill Naruto and Tsunade got in the way. He had no difficulty cutting through her throughout the whole encounter, and at that instance his attack just stopped because of the angle he was at and the fact that he did not expect her to be there in the first place.
There's absolutely nothing implying that Kusanagi would be able to cut Juubidara, especially when a much,
much weaker 4 Tailed Naruto was
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.
Tanked Yasaka Beads from Madaras Susanoo point blank range neg difficulty...........
Said beads were far smaller from the norm, meaning their power was appropriately reduced, and she still had to regenerate from it. It's not tanking if she has to regenerate from the attack.
Juubidara wouldn't even shrug from those beads if fodder shinobi using
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.
Tanked max power Shinra Tensei with no chakra neg difficulty while people like Shikamaru and others had legs broken etc.
She released her seal. That implies that regeneration was at play for how she survived.
Tanked stab through the heart from Kusanagi...........
That's not a tanking feat. The mere fact that Kusanagi was able to pierce through her at all means she wasn't able to tank it, only survive it.
Body was cut in half she still lived, still used jutsu, still healed all the other Kage and not her self, she still survived.
Not a tanking feat either. And Madara did much the same more capably when he was bisected.
Jubidara feats:
Survived getting his arm kicked off by Gai.
An arm and most of his left side. Guy would have done much worse to Tsunade.
Survived getting cut in half from Sasuke
Which Sasuke can just as easily do to Tsunade.
Survived being whacked by the tailed beast
Which says
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seeing
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the tailed beasts can
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on their own. Madara wouldn't even be intact without the
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that Sage Mode gives.
From the looks of it Tsunade is more durable to me.
Not at all. Most of what you gave weren't tanking feats at all, and are all trumped by what Madara took on versus the bijuu, and by what Kyuubi Naruto (who is substantially weaker than the Juubi) was also able to tank.