Sakura being able to evade FRS is a complete joke.
Normal FRS crossed the entire CT crater in exactly 1 second as stated by Nagato. The CT crater was wider than 6 mountains. A single mountains at the base can be over 5 km wide, and the FRS crossed all that distance in exactly 1 second. Sakura by no means has the speed feats to compare to that. I don't know why people keep bringing up blitzing some Juubi fodder as an impressive speed feat.
Oodama FRS is also very fast as it traveled as fast as Sasuke's Susanoo Arrow. We all know that Susanoo Arrow is so fast that not even a 3 tomoe Shraingan user like Kakashi can react to it. Sakura by no means has the feats of overwhelming a 3 tomoe user with her speed, so she's not evading that either.
Lastly, Chou Oodama FRS shits. It was launched on top of the Shinju, which is hundreds of kilometers tall. Naruto threw his FRS in a diagonal fashion, so the distance thrown is longer than the Shinju itself. And the FRS traveled all the way from the top of the Shinju to Madara in only short moments. Even if Naruto misses, the blast diameter would still be large enough to encompass Sakura as it's arguably mountain sized.
Naruto can possibly win high diff if he was only restricted to Frog kata, because he's just way too fast for Sakura to handle. Naruto's movement speed feats in Sage Mode are more than enough to overwhelm Sakura. Deva Path was fast enough to dodge the CT crater crossing FRS, and Naruto was even faster than Deva Path when they tussled in CQC. As stated by many other people, Sakura isn't landing any direct hits with Naruto's insane movement speed and reactions. Naruto also once hinted that his reactions in Sage Mode are superior than his KCM mode.
I still don't understand why some people think that reacting to the acid was impressive. Sakura reacted to a free-falling liquid, how the hell is that impressive? Sasuke did the same thing in Land of the Waves arc lol.
Lastly Katsuyu, what the hell is this bitch going to do to Naruto?