the last quote is why i put overrated because as kakshi said "but what if you cant" a lot of people think that so long as keeop your distance you can defeat her which is so not truetsunade is EXTREMELY underrated. during the sannin shwodown, she showed the most potential.
-she was exposed to her greatest fear(blood)
-she was under stress due to her decision with orochimaru
-she was very low on chakra when the showdown even started
and still was able to show the most "spunk" out of all 3 sannin. plus she has the healing ability to pretty much survive any attack and encounter. and if she gets in close and lands a punch, the fight is over.