Yes they are supposed to be. It's called a three way deadlock of offense and defense just like rock, paper and scissors.
snake > toad > slug > snake
This is influenced by the Sansukumi way of thinking where it keeps the three objects in a deadlock. This concept was referenced and joked upon in an omake of episode 164 of Naruto: Shippūden, where Katsuyu feared that with Manda deceased, Gamabunta and the toads of Mount Myōboku would now try eating it. This was also played for in episode 8 of Rock Lee no Seishun Full Power Ninden where after Tsunade and Naruto summoned Katsuyu and Gamabunta, the latter swallowed the former shortly after appearing, much to Tsunade's horror.
Someone posted a manga page above conveniently ignoring that Katsuya can divide itself and get away from snake's grip and that's exactly what it did on the next page.
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Tsunade was the reason the other Hokages were still alive and not already dead when Oro reached and helped them out in recovering faster. Still since it's not really flashy enough for the guys looking for something fancy so they don't find it impressive.
Equality doesn't always mean that everyone should have exactly the same qualities. Tsunade has definitely proven herself a good administrator and has been taking care of Konoha during worst attacks since it's founding.
Kakashi would have been a goner a long time ago if she had not returned. Sasuke would have been a missing nin and Naruto may not have had much freedom to do anything if she was not open to new ideas or Danzou had taken over back then after third's death.