Originally Posted by apacolypz
We don't know enough about Uzumaki traits besides longevity, sealing jutsus and large chakra pools. Kushina having a similar ability to the powers of the outer path of the RG is just interesting. Now we have the second Uzumaki using those said chains (though not as good) against a weak Hashi clone. Kushina held down a Bijuu on her deathbed...let's not compare her to Karin who just went bat shit all over the place. It could be a jutsu just for women as Naruto or Nagato haven't used those said chains. Obito only did using the RG..and those chains are slightly different. Kushina didn't even attempt teaching Naruto how to use those chains but like her how to master using Kyuubi's chakra..Maybe it is a jutsu he cannot use.
Its character progression, Kishi only wants Naruto to Rasengen opponents till they're on deaths door, then TnJ as a finisher. Naruto hasen't been faced with a situation like Sasuke/Itachi vs. Sage Kabuto where they were only trying to contain him, they should've made Diedara a Leaf Ninja so he could've replace Sakura, and they'd have 3 characters that seemingly blows up or destroys everything around them.