If that's the case then why didn't oonoki went to her for lightened weight? :lol rushing the attack to get stabbed in the gut doesn't say much about her taijutsu tbh.
Not at all, also remember that the punch was to a clone, the real madara Stabbed her afterwards. Madara never took that fight seriously, he mentions it a couple of times in said fight, and once more when he tells BZ to go back to obito's body cause he wanted to "test" or measure or something the kages. Also Mei intercepted his Katon with her Suiton, doesn't prove much though.
So far all the feats of Tsunade regarding Taijutsu boils down to "she lead the attack" (someone had to, and seeing how the fight went I wouldn't mention it too often :lol), "he punched his clone" or something among those lines. You can't seriously hope that he can beat someone with Senjutsu just with that. Also, forgetting that Orochimaru did receive a full blow to his chin in her fight, and was alive and kicking like nothing, picture what would happen if someone with the enhanced defense Senjutsu gives receives the same punch.
In the end, as explained by Fukasaku, someone with Senjutsu will win the long fight due to using external chakra. Tsunade will eventually run out of chakra to heal herself (also, she was drained from healing 5 people with the Byakugou, so it's not like she can fight indefinitely) while Jiraiya just have to keep his cool to win.