Board Thread:Versus Debates/@comment-43403813-20190907005521/@comment-43403813-20190929213259

@MadEyes You are pointing out one situation in which Amaterasu burned something instantaneously. There have been many other times where Amaterasu takes its sweet time to incinerate something, one such example is against Obito. If Amaterasu was so quick at burning something, Obito wouldn't have had the chance to use Kamui to evade the flames. Another example is the multi-headed dog summoning, that certainly didn't burn away/ have burned hole marks on its body instantly, and thats coming from an Itachi with unlimited chakra who was in control of his own facets.

It's not fair to pick out one situation where your point did happen, and ignore the other situations where it didn't happen.

The Rinnegan is an ocular jutsu, meaning that Bansho Tenin can pinpoint things to pull as long as it is observable. You can still see the user of Susanoo inside the Susanoo body, and we know that people can be pulled through a Susanoo either from tangible or intangible attacks, like Gaara using sand to pull Madara.

Also, you forget that it was Nagato VS Itachi Killer Bee and Naruto, a 3 V 1 battle. The King of Hell and the summonings were focused on both Killer Bee and Naruto, allowing Itachi to use the kunai. If it was just Itachi VS Nagato, it would have been a completely different story.

Itachi is a clever guy, but intelligence doesn't create a win out of nothing. That's like saying Shikamaru would beat Kaguya. That might seem a bit overkill, but considering the strength of Itachi and the strength of Pain, it's a similar contrast of strength.