If it was 10 meters away, sure he'd be caught, but it's 70. Do you know the how far that is? That allows considerable amount of prep time for Kidomaru before Sasori's pupppts swamp him.These things are coming at him from every angle. Are you saying he can spit out and set out webs traps in every direction before one scrapes him?
Also throw in Hiruko's poison needle mouth spray, a gas canister that shoots even more poison and the Third Kazekage puppet which utterly wrecks Kidomaru and there's no chance. The Third's puppet's right arm held several poisoned blades, while the left arm could open up to reveal several summoning seals that summoned thousands of similar arms to attack the target.
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These arms were capable of crushing an opponent, emitting poisonous gas clouds, and releasing wires that dragged the opponent into the gas cloud. Oh and the large-scale jutsu Iron Sand? That's mixed with poison as well so...game over.
Kidomaru's holes in his armour mean he's dying in that gas cloud even if 6 arms are miraculously to make it through 100 puppets at once.
Did you even read the conditions? The 3rd Kazekage was restricted. Why are you mentioning him?
As cloud of gas blown towards Kidomaru is blown away by the debris from his arrows. Similarly to how Sakura used a bomb to blow the gas away.