Board Thread:Versus Debates/@comment-24037840-20151108120609/@comment-25122992-20151221110827

Oro must have the same poison immunity as Sasuke, so the poison wouldn't help Sasori in the battle against him. And even if he wouldn't have it, he still is enough agile (thanks to his snake-like traits) to dodge all of Sasori's attacks or at least shed his skin to regenerate all the damage.