You have this problem because you try to downgrade someone who has shown to be superior, yet you deny it and this comes about.
Susanoo was still formed when he fell, why would he let susanoo break down? That stupid to even think.
He was still in sage mode btw, you should look carefully dude.
Sasuke also have curse mark which heals so its the same effect.
I fully agree. Naruto was in another level with the Sage Mode when this was introduced... I can't understand why Sasuke became 'so powerful' when Uchiha don't have the body with this quality. Naruto in normal mode should have a body even stronger than Sasuke's body.
...maybe this has something to do with the fact that Naruto has been 2-3 days fighting before Sasuke arrived.
...I think Kishimoto messed up with the handicaps for the sake of plot.