Board Thread:Versus Debates/@comment-30830650-20170116074632/@comment-9782468-20170119011734

At the time the Team 7 first reunited (which is when OP said they were battling), Naruto hadn't realized he could use Sage Mode and Kurama mode at the same time. I'm not saying that throughout the course of battle he couldn't figure it out, but it's not a starter for him. After all, Kurama didn't like the idea of Naruto using a power outside of the Nine Tails chakra, and only told him it was possible when they had to fight Juubito, who only could be hurt by Senjutsu.

Sasuke with EMS doesn't have PS. Even if you wanted to make the argument that Majestic Attire is the same thing (and it was highly debated in this wiki), Sasuke didn't use that til far into the battle with Juubito. Earlier, he only used lesser forms. You'd think he would have use it against Juubito if he was capable. But he didn't.

Jiraiya wouldn't have infinite chakra, he'd only be able to use sage mode until his chakra ran out. If he doesn't have enough of his own chakra, he can't balance anything with the Nature Energy to make Sage Mode.