I really dont think im underrating at all. Hiruzen has shown jounin-level techniques at best. Sasori's main puppet should be enough to handle Hiruzen. Pulling out the third Kazekage and iron sand is overkill. Hiruzen definitely doesnt have the mobility to deal with Kakuzu and his masks, as well as not having any defenses capable of sustaining damage from his OP elemental techs. Not too mention Kakuzu is faster than Hidan. Over all i cant speak much on the behalf of Konan. Weve hardly seen her do anything.I could see old man Hiruzen defeating Konan and Sasori. He's too old and wouldn't be able to keep up with Deidara or Hidan. Pain, Kisame or Itachi would just overwhelm him in brute force but you guys are seriously underrating old man Hiruzen.
I'm not entirely certain on whether he could beat Sasori or Kakazu.
Yeah i wasnt really going to take into account RDS since thats not necessarily a victory, and him being able to hold an opponent down to complete the technique is not a given.He could RDS almost everyone. Without. RDS he loses to Nagao and Itachi hands down and Deidara (yeah i'm biased) because of his long range style.
Edit: Kisame Tobi an Kakuzu all beat him too.
I really dont think im underrating at all. Hiruzen has shown jounin-level techniques at best. Sasori's main puppet should be enough to handle Hiruzen. Pulling out the third Kazekage and iron sand is overkill. Hiruzen definitely doesnt have the mobility to deal with Kakuzu and his masks, as well as not having any defenses capable of sustaining damage from his OP elemental techs. Not too mention Kakuzu is faster than Hidan. Over all i cant speak much on the behalf of Konan. Weve hardly seen her do anything.