Kakashi's MS could NOT move Naruto in a tailed beast form somewhere else with the MS. Just to stop the raw power of Susano'o's arrow depleted his chakra to near depletion. Absorbing the tailed beast, especially the 9-tailed fox, is way beyond Kakashi's capability.
Sorry to say, Oro would win hands down. Not like Orochimaru would even be scared. He trained Sasuke and constantly tried to attack and take of Itachi's body. Really, this isn't even a 1v1, all 1 sided fight haha.
Kakashi would defeat orichimaru. He has the hidden leaf will of fire and graduated the academy at the age of 5 and was a jonin at the age of 13. His intelligence is better than shikamaru Nara and is considered to be hokage at rough times. And pain fearfully stated that kakashi must be stoped because he could be a great threat to the akatski. But the akatski also agreed that the tedo sensi tailed beast chackra acsorb would be alot faster with orichimaru. So you can't really judge a ninja battle anything can happen. Especially with brains, sasuke defeated danzo because he already thought out his opponent and knew his abilities, if he fought donzo hard headed he'd be a goner. So kakashi's lightning clone would already read his abilities. Orichimaru's getting weak sasuke defeated him sooo easily he's getting old kakashi's the next generation from oro. and the newer generations always stronger and surpasses. Oro. Even stated that him chackra controling fuin jutsu at his age is impressive. So I say they would both die
You just literally pulled that all out of your ass just now. First off, the facts of Kakashi's youth only shows of how great a shinobi he is compared to others in Konoha. However, he knew what his extents were, one being that Jiraiya was by far more powerful then himself. Itachi also fled once Jiraiya showed up for the same reason, Itachi knew Jiraiya was way to powerful. We also learned that Jiraiya couldn't stop Orochimaru because he wasn't strong enough, that Orochimaru was more powerful. That already says Oro is stronger the Kakashi.
Second, Sasuke didn't know jack of Danzo's abilities. He DID GO IN HARDHEADED. If you want to debate otherwise, then by all means, go back an re-read. Please find where he studied Danzo's abilities before hand. In the mean time, I'll point you out to where he went in hardheaded. It starts at chapter 476, where Sasuke questions the eyes on Danzo's arm. He has no idea what they're purpose on his arm was, neither did he even know what Izanagi was.
Third off, Orochimaru was getting weak, but not due to age. His body was degrading. His original body was decaying pretty much thanks to all the experiments, so until he found a more suitable body, he had to keep hopping into new bodies. The bodies he was hopping between weren't able to support him so they too degrade. This is why he was so determined to get the body of the Uchihas. 1 being their eyes, but 2nd reason was he somehow knew of a method to preserve the body. Maybe he knew all the secrets about Madara and his eternally young body as an Uchiha, hence the reason Kabuto knows?
All we know now is Kabuto has surpassed Orochimaru in power. The proof lies within Kabuto. If Kakashi shows up and gets his ass handed to him, there you go, Oro was stronger.