I was seeing some calculations of some Naruto characters and I found one from Kakashi intercepting Raiton: Gian from Kakuzu, I realized that they had accepted that Jutsu was a real lightning, but they didn't use the speed of a real lightning from Narutoverse, and used the our universe, I wanted to know why.
A real lightning in the Naruto universe has a higher speed than our own based on Kirin using the manga and databook.
Raiton in Naruto is created by chakra and although it has several natural characteristics and is normally carried as extremely fast, a natural lightning in Naruto is stated to be faster than in real life (or at least, than most real lightnings).
There is a distinction between the speed and power of both. That is why Raiton is usually accepted as 440 km/s, while Kirin/natural lightning in Naruto varies between 1000 to 2000 km/s or higher.
But then I believe it would be ignoring a fact within the universe.
Yes, the calculation was made for Kirin, but it can be applied to any and all real lightning within Narutoverse since it is literally a real lightning, so I believe that Kirin's speed should be used in other feats based on real lightning.
I understand what you say, but that's not my question.
According to what I saw, they accepted the imposed fact that this specific Raiton had the speed of a natural lightning, something compared to Kirin in speed. I do not say any and all Raiton, even because I am aware that Raiton are accepted as having the speed of a real lightning of our world, here on the Wiki, my discomfort is accepting to be a real lightning and not using the speed of a real lightning of Narutoverse, that would be Kirin's speed.