i just watched the animated fight of there encounter on the anime and it says
Raikage: "There's no shinobi faster than me, not since the fouth hokage!"
Naruto: "You knew my dad?"
Raikage: "We fought many times, I came to believe that no one could ever defeat him"
And at my house I have this volume in English that i bought a couple weeks ago, I can post that translation later on when i get back there
Raikage was convinced by his brother that Naruto was reliable, that he, just like Bee, found their sun, as corny as it is, and thus its a Jinchuuriki that wouldn't be overwhelmed by his bijuu, he saw the kid having good resiliance and speed, and knowing his Uzumaki heritage plus his bijuu chakra he also knew Naruto was one of the few guys to be able to match him in chakra quantity.
There was really no other way, at least no one that was quick and served the plot:
what would they do, arm wrestling?
In Sage Mode Naruto would've shat on Raikage.
Both would have a 0.
Good luck with 2 chapters on enduring blows.
Raikage saw first hand Naruto's convinction, and by the way of the main character, he believed in him. Testing him in speed was the only logical choice imho, since, as he said, he was the second one to dodge his charge at full speed.
The whole point is that the confrontation went down the way it did because speed was the point. That's the only thing Ee would have needed to learn in order to see whether Naruto had surpassed Minato. That was the key, since that was what Minato had over Ee.
And I seriously doubt Sage Mode would have been a threat to Ee.
He wasn't the strongest, nor the most durable, nor he had the most destructive jutsu, he simply was the fastest.
And if Naruto wanted to be the saviour, he needed to prove to be able to do at least that much, as in defeating Raikage in the thing Raikage did best.
In strenght? Only Tsunade and Jiraiya showed comparable strenght to Naruto in Sage Mode
And even then, when he said it, Naruto had not shown his full speed nor the ability to dodge Raikages top speed for the Raikage to even assume that Naruto could have surpassed Minato in that field inorder to be branded the savior.
And please, stop being so sure of what Minato had over the Raikage, its not a fact.
Huh? Tsunade has shown more strength then Sage Naruto too. Sage Naruto hits someone, they get thrown back. Ee and Tsunade hit someone, and they get a hole punched through them. They also both hold the feat of cracking Susanoo.
I get that, that it wasn't until Ee saw the faith both Kirabi and Tsunade had in Naruto that he began to change. Outside ninjutsu, I see no reason to doubt what they had over each other.
One isn't a saviour if he hasn't the skills, and Naruto had to prove that he was at least his father's level.
Considering he killed a Path without even touching it and showed such strenght that he can throw Rhinos and Bijuus around, I wouldn't sell him short.
A cracked only the riblet version, and Naruto never ever punched Susano'o in SM, so we can't really compare.
Don't forget that Raikage is coathed in lightning, every strike has high piercing abilities
is smooth, if it was only strenght, like when Tsunade punched Madara, it would probably end with Juugo exploding parts flying around
Also see here how Raikage hands ( noticiably the left one ) is enclosed in lightning, similary to Sasuke's own hand.
Raiton's property is penetration, Bee showed as much when he used a pencil against Kisame. Considering A's Raiton armour is used for his Nintaijutsu, its pretty safe to assume that his blows too have piercing powers.
Chidori is different because you focus all the chakra in the hand ( which transforms into a sword ), while Raikage coathes his whole body with Raiton chakra
---------- Post added at 12:12 PM ---------- Previous post was at 12:11 PM ----------
Just like Yondaime was the fastest one alive. One can argue on his smarts or whatever, one still can't argue that, with Hiraishin, Yondaime is faster than anyone bar Naruto
Raikage doesn't make his raiton penetrate though, he uses it as a shield and to speed up his synapses. It's only penetrative if the user makes it penetrative, like what Bee did to the pencil or what Sasuke does to the sword.
I don't think blunt force would end in parts flying around. Juugo is not ET or Susano'o. If it was penetrative, Juugo would have a hole, not a crater.
On what they have over each other should not even be brought up. We know close to nothing of what Minato can actually do with the seals or his chakra capacity or his durability etc to even come to a conclusion that there is no doubt that so and so had this over who.