Originally posted by: DarthEnder
A little transcript from the episode:
Kis: "Perhaps you can fight him evenly...but I cannot. He is too strong."
Ita: "Yes. If we both fought him, we would both be killed...or in a good case, we might kill him, but we'd die along with him. Even if we had more men, that result would not change."
Kis: "His caretaker is a legendary Sannin."
Now, maybe its just me, but in the first few lines they are talking about a He and a Him, and then, in that last one that say that His caretaker is a Sannin(obviously Jir).
So from the way this looks, I think that the person they are talking about who is able to kill them is actually Naruto, or, more likely, they are talking about Naruto as though he IS the Demon Fox, and it is actually the Demon Fox they think is stronger than them and not Jir.
EDIT: Bah, I see Cheez already brought this up, and with screenshots too. My bad. Anyway, I don't know if the translations are right or wrong, but from what the AnA version says, I think they are talking about the Fox.