Remember Sasuke vs Naruto??? Now I don't know if a sharigan can tame a beast while its inside its host or not but something tells me that its a possibility. I'm guessing sharigan users can actually link their minds with the person they are using the genjutsu on. In this case, the 9-tails was locked away so the only way the 9-tails would be able to wake Naruto out of it is if he gave Naruto some of his chakara. Still, Sasuke was able to actually see and talk to the 9-tails within Naruto just by casting an genjutsu on Naruto. He was even able to suppress the 9-tails chakara as well.
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This tells us nothing relevent to Perfect Jinchuuriki. Sasuke seeing into Naruto is perhaps an indicator of something else.
Also, as Kurama himself said, he can only help Naruto a tiny bit while the seal is active.
The examples you are giving, although I respect you trying to challenge what I've come up with, you should always test a theory, are flawed.
Sasuke was able to supress the Kyuubi's chakra while Naruto was also suppressing the Kyuubi's chakra, for one.
Sasuke also suppressed it while it wasn't a partner of Naruto's but rather an enemy living within.
Finally, none of those scans hold any weight when it comes to my point about one being able to 'tag' the other out of Genjutsu. Rather you showed me Sasuke controlling Manda, which was Orochimaru's pet essentially and Sasuke suppressing an already sealed and suppressed Kyuubi.
Also, I'm not sure this was a Genjutsu but rather Sasuke seeing into Naruto...you know how they do.
I also think that Kyuubi's warning about Sasuke hurting Naruto was cool. Side note.
Neither of those tackle the Perfect Jin issue, but it was good none the less.