All the rest of your points are mostly correct, but Juugo's attacks are much to destructive for Kaiten to withstand. [
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][
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]. He was also able to withstand the
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while reacting to his V1 Shunshin.
I'd say Juugo takes this High Diff.
Remember that wasn't even full strength/adult Jugo that fought the Raikage, Jugo is the tallest character in the series, even taller than guys like Jiraiya/Raikage/Kisame, only one who challenges him height wise is Han the five tails jinchuuriki.
When he fought the Raikage he was even shorter than Karin, because when he healed Sasuke in their fight with Killer Bee his body shrank to a 13/12 year old as he transfered his flash into Sasuke.
So the Jugo that fought Ay was actually a small little pipsqueek, and yet he kept up reasonably well with version 1 Raikage. I think a full grown/full strength Jugo who went all out like he did against the Raikage would have given A a run for his money, and I think Neji would be in serious trouble and if he won it would be similar to how he won against the spider guy, as in it would be double KO sort of thing.