It is funny how Naruto didn't react to Sakura's speech, some haters claimed he was ignoring her or not impressed like as he took action towards Hinatas.
This speech from Sakura was addressing everyone that Naruto was the only one who could save them and they all had to believe and do whats in their power to help him, Sakura stated herself that she would do what was in her power and even if they failed, its better to go out fighting. Most importantly, she spoke on his beliefs for him. She knew what he was thinking and voiced it herself. Its again funny how people say Hinata knows Naruto better yet it was Kurama's input from that speech which really did anything. If Hinata knew Naruto so well, she would have given the speech at the frontline. But no, it was Sakura, again proving she knows him best and understands him. Its funny how this built on chapter 628 where her concern and faith for him were brought into a better light. Naruto didn't need to say anything because he knew knew everything Sakura said and how he considers them all comrades from the bottom of his heart. Heck this is why we see her focused on the memory of chapter 628 when he speaks of his friends not being there as the worst thing to him.
-If this chapter proved anything, it again not only advocates Sakura's concern and faith in Naruto, but also how much she truely understands him and his position. She knows better than anyone being on the same team that he has had to deal with similar responsibilities (Sasuke, Pain) and how its always fallen on him alone, but this being the biggest of all, she knows its not all up to him, they all have a role to do and if they fail, better to go out fighting. If this chapter did anything, it shows that the one in sync with Naruto is Sakura, not Hinata.
-As a bonus, Minato came in which really bolstered our hope, now will he make the MinaKush reference next week or later on before the edo tensei breaks? Hopefully. But the main advantage is who he sees Naruto with right now, and that just happens to be Sakura.