I think there inter changeable really.

Yeah, i watched it too earlier and saw what you're talking about .. Anyways, here's the skills of each Ninjas you mentioned .. I think, Asuma WB and Asuma Edo Tensei are almost the same, same with Iruka and Sasori Edo Tensei .. So, it's either be full zombie team or the regular konoha buff team .. :D

I would use a barrier ninja instead as he would give an additional 10% buff (40 instead of 30).

The only reason I see him using iruka is because his chase paired up with KoH always triggers Hiruzen’s chase.

You need WB asuma to immediately use hiruzen mystery. Edo asuma hits harder and is a bit better in every way than WB asuma.

Sasori would only be useful with edo asuma as you would get 20 extra chakra to make everyone attack twice. Other than that he would be worse than iruka imo.

All in all, it depends on your main. The best lineup is still barrier + asuma WB, st least until we get bond skills from edo tobirama.

edo asuma + edo sasori let you gather 60 chakra in round 1, so you c*e hiruzen + edo sasori or a 20 chakra main mystery.

Edo Hiruzen is used to blitz, sacrificing the barrier boost for a 20 chakra mystery is not worth it

You can still blitz round 1 with WB asuma and Barrier such as Darui,

In the end you get Ignite, Poison, Paralyse debuffs. Extra 10% gives good enough dmg to finish off low hp.