Board Thread:Boruto: Naruto the Movie/@comment-27828147-20160219143650/@comment-734582-20160530172859

When naruto cut himself, the wound healed in seconds. This is on part with Hashirama-level healing. Judging by Karin's bite marks, uzumaki healing is not that strong. Thus this insane healing is Kurama's power. Furthermore, Naruto's seal leaks chakra all the time by design. His healing and reserves are above all Kurama's. Thirdly, Tsunade is a medical ninja and yet expected him to stay out for days, and was surprised he was fresh after one night. The Uzumaki were friendly with Konoha, so she likely treated some. She studied Hashirama's healing. But she was still caught offguard. Thus, Kurama is what heals Naruto so fast. Version 2 cloak also proves this.

Furthermore, Kakashi explains that it's Kurama that allows naruto to use hundreds of shadowclones. I'm usually not so happy to throw the word around, but in this case naruto making hundreds of clones on his own is a clear retcon. Though he was extremely angry and emotional, which usually brings out Kurama's chakra anyway. Using more than a handful of clones is thus his jinchuriki feat.

So yea, Naruto's abilities are mostly enabled by Kurama. Kakashi's statements suggest that naruto has between two and four times as much chakra as him, and the best Kakashi can do is one shadowclone. Naruto's fight against Kiba suggests this is quite accurate.