Great fights! Congrats again to both of you!

As a side note, it's funny that he was actually closer to killing someone in first 2 rounds (and therefore have a high chance of winning the match) with Hidan team rather then the one with Uchiha brothers. I mean he was very close to killing both Bee and Tsunade in first fight. And he probably would have if he had full team combo.
In the second fight, when he used Uchiha brothers, it didn't actually feel there was any real danger to the Immortal team.
So against these Immortal teams, I would still go with blitz teams and tag (a.k.a 30% less def and resistance), rather than anything else. You have a higher chance of killing them one by one instead of trying to control them all. :P
I saw in Memo's fight that even with controlling 3 ninja's it's still highly possible to lose against Immortal teams (or variations of them).

On another side note, it's good to see that there are ways to counter top tier ninjas.