Aha, you're a funny little fella.
When Akatsuki was introduced, they were few of the strongest characters but as the story progresses, the characters who are ALIVE get the chance to improve and become stronger.
Indeed.
Itachi - Kakashi was never on par with Itachi. Their 1st encounter proved too much for Kakashi. 2nd encounter, Itachi at 30% power was playing with Kakashi and Naruto. In this war, it's clear who is the stronget out of the two.
Misconception. 30% Itachi was
never playing with Kakashi and Naruto. Let's keep in mind Kakashi and Naruto were a lot weaker back then. I'll break it down for you.
Itachi attempts his fireball, Kakashi and CO dodge it. Kakashi uses doton and sends a clone.
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Itachi was fooled and uses genjutsu on a clone
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It doesn't work. Itachi got tricked by Kakashi's set up. How do we know? Your man pretty much says it himself.
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Then Naruto lands the finishing blow
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Something Kakashi could have done himself. So enough with the "£30% Itachi was playing with Kakashi and Naruto" Because you'll realise Kakashi barely broke a sweat in that match.
Kisame - I honestly think Kisame was one of the strongest Akatsuki. Being matched with Gai was a disadvantage to him yet he still survived Gai and his gates, granted Gai wanted to capture him. Kisame was a beast with his Samehada and I will go as far as to say that he made better use of Samehada than anyone did. Odds were all against him, he was outnumbered (Naruto, Yamato, KB, like 3 other ninjas, Gai), wanted to send the intel out to Tobi, Samehada was acting like a little chakra ****. Kisame is nodoubt the stronger out of the two, one on one with all their abilities. As for Kakashi, no. Kakashi can't win vs. Kisame. He almost captured Killerbee ffs.
Your points don't make Kisame stronger than Gai or Kakashi. So Kakashi cant beat Kisame because he almost captured Kisame? Please get this garbage out of here.
Deidera - I would say Deidera was on par with Kakashi when he was introduced. Kakashi is now stronger than him but Deidera was still awesome

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At least you can admit this.
Sasori - One of the stronger Akatsuki. He let Sakura and Chiyo kill him for those who didn't read. Chiyo did most of the fighting anyways so it wasn't that pathetic. Afterall, she said she was rivaled by only Tsunade during the war. I don't think Kaskashi would have lasted as long as Chiyo and Sakura did if he had been matched up with Sasori. Chiyo knew most of his techniques and even that of some of his puppets. This is the guy who killed the strongest Kazekage.
Current Kakashi wouldn;t have lasted that long? Please spare be the bs. First of all, the sharingan can see chakra so he'll know where the real body is and he can pretty much end the match instantly with Kamui and there is nothing Sasory can do with it. A bunshin feint followed by Raikiri would also be deadly. Kakashi's one of the smartest character in the series. Look, Sakura REACTED to Sasori more than once, WITHOUT Chiyo;s aid. So a character who is far better reflexes/is faster/more agile isn't going to have much trouble reacting to him.
Hidan - Kakashi and Gai are obviously stronger than Hidan. Not sure if Hidan would be the best opponent for Gai because Gai relies on Taijutsu and Hidan loves it

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Seems you have a bit of common sense at least/
Kakuzu - Kakashi was NOT stronger than Kakuzu. Had Naruto and his backup not been there, Kakuzu was clearly the winner. I believe Kakuzu was still as strong as Kakashi on the battlefield when he was revived.
This again? Back then they were pretty close in power, Kakashi and Kakazu. Current Kakashi is stronger. Now first of all, let's review a things.
Both Hidan AND Kakazu attack Kakashi at the same time
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Not only does he react to Hidan with a mere kunai in mid air, he also has the speed and skill to save shikimaru and co with a double raikiri
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that's pretty much insane, even back then his reactions/speed/skill were pretty damn good. Keep in mind current Kakahsi has been even more impressive.
Kakashi says even if Naruto didn't arrive he would have used Kamui and implied he would have won.
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So again, invalid point. There is
nothing to suggest Kakazu is stronger than Kakashi. Maybe he was very close to Kakashi back in that arc, but current Kakashi? No way.