Why oro is still not top 10 worthy

[Nattana]

Orochimaru is top 3, right after Madara and Obito.

 

[To Whatever]

Hiruzen, Team 7 in the Forest of Death, Jiraiya (twice), 4th Kazekage. So not every fight.

He fought against Sakura, pre-rasengan Naruto, and pre-chidori sasuke who had 2 tomoe at the time. So that isn't even valid since he could of easily scraped them.

He most likely assassinated the 4th

 

[HiddenSound]

He fought against Sakura, pre-rasengan Naruto, and pre-chidori sasuke who had 2 tomoe at the time. So that isn't even valid since he could of easily scraped them.

He most likely assassinated the 4th

True. But if you want to get technical

All we know is that he killed the 4th.