Owarij.
Do we know how long itachi can keep susanoo up for?
Since we are going by databooks.
Itachi's stamina is 2.5
Compared to Sasori's 5.
If Sasori can keep the fight going, even if he switches puppets.
Let's say this. Knowing the circumstances, he opens in hiruko.
Then he is in his body, knowing that itachi would go straight for him with amaterasu, why not switch beofrehand so that his puppet body does not get destroyed.
Meaning that, sasori lengthens the fight by dodging and switching puppets.
While taking out the third kazekage.
This would mean Itachi would have to go on the defensive.
Iron sand is faster than gaara's sand.
And can be used to hold down susano'os arms.
Then using the iron sand to drag itachi out, just like gaara did to madara.
Even though Oonoki sped it up.
Im guessing iron sand is either as fast as it or almost as fast.
If the battle goes down too long, and itachi has to play defense too long.
because of the iron sand and running the risk of getting poisoned.
If he uses his sharingan abilties too much it also affects his eyes greatly, causing vision blurriness.
If sasori can just switch puppets , and keep it up.
hell have this fight.