both stand a chance.....
Hiruko would be an easy trip for itachi, 100 puppets would be easy for susanoo, but 3rd kazekage would be the problem =/~sasori(puppet) himself is blockable by yata mirror
if itachi is able to keep susanoo up to last all 100 puppets, 3rd kazekage and sasori..... Itachi for the win
I doubt itachi can burn down all those puppets.... but his key to victory is susanoo in this battle, if he cannot keep susanoo active.....then sasori for the win..
people! sasori is not the weakest...... i think only above him are... madara,itachi,pain...