Bro not that I'm saying your lying it's just that slightly confused when has it ever been stated that Sakura or tsunade can heal stamina reserves or chakra reservesWhen it comes to healing small cuts and stuff like that it works pretty fast as seen in Part 1, and in the Gaiden Naruto was able to get pierced through his gut and get up minutes later perfectly fine. So I'd say anything that isn't too serious can be healed from. More injuries, longer healing time too of course.
But it won't restore his chakra while Sakura can restore Sasuke's chakra and stamina. So it won't let him change the outcome.
Someone made this arguement to me awhile ago when in reference to madara car the Kage how I said gaara and onooki fought for very long time but someone said tsuande healed them so their stamina and chakra was fine I was like .-. That's not possible for one gaara has huge chakra reserves it TiVo also tsuande seven without the bijuu so to fully replenish him along with onooki should not be possible even if they could do that