Sakura, high diff.

Honestly no idea

Does Sakura even do anything in The Last?

She should be comparable to TL Base Naruto since she fully replenished his chakra who was able to destroy Hamura's Tenseigan and Naruto did most of the destruction of it as Hinata couldn't even scratch it. Hamura's Tenseigan was calculated at Multi-Continental.

She might've had chakra reserves comparable to Naruto's, but that same excerpt says that in order to complete the mission, they needed Naruto as he was the strongest person on the team. Besides healing Naruto, I think she was the one that defeated that big crab creature as well, but other than that she didn't do much. Tim Xman once talked about how in her eponymous light novel, Sakura Hiden: Thoughts of Love, Riding Upon a Spring Breeze, she almost lost to a V2 psuedo Jinchuriki named Kido, who almost killed her with a Tailed Beast Bomb. Besides the feat of healing Naruto, Tsunade has far better feats in general, especially when she uses the 100 Helaings, so I'd half to give this to Tsunade Mid to High diff.

Sakura mid diff