Regular ninja tools.what weapons exactly???? the two Hokages would simply be enough backup. But consider something else, Oro as 1000+ snakes, but including his big strong one like Manda, three headed one that attacked the leaf villiage and his white 8 headed snakes (8 branch tech.). We-ve also seen him use his sword like a remote, and used wind element with enough force to destruct a forest. His defenses, well we know those which would be enough to withstand both Kakuzu and Sasori's attacks.
I would mention Sasuke's abilities, but this isnt needed.
Yeah oro has a ton of snakes that would get roasted by Kakuzus fire elment.
Oro has hell of a defense too but defense is only good for defending, oro cant really get to Saso or Kaku(number advantage)