As far as I'm concerned, truer words were never
I agree that Naruto probably would not have allowed Sakura's confession to change anything, even if he had fully believed her. Naruto has all of his own wants and needs on hold until he has kept his promises / met his goals / proved himself worthy. That appears to mean bringing Sasuke back into the light and standing beside him as an equal.
There's so much complexity to what happened during Sakura's confession, and to my mind it established a number of things pretty clearly:
+ Naruto's reaction to Sakura saying she loved him proves how he feels about her, and what he's hoping for in terms of a relationship with her. He loves her. LOVES HER.
+ Sakura is confused. She loves Naruto, and wants to choose him, but she has not achieved complete closure on Sasuke. I believe this is because she has grown to love Sasuke more as a person and teammate now, and less as a potential boyfriend/lover. It's been difficult for her to figure out where one kind of love has ended and the other has begun. Sakura's feelings for both boys have been a storm (an allusion to the word shippuuden, perhaps?) that has been raging for a long time now, shifting and changing the landscape as it works itself out.
+ Although Sakura's confession didn't resolve the feelings between her and Naruto, it did give Naruto an equal hand -- if not the upper hand -- in their relationship. Always before he was the eager, devoted one who would do anything for her -- without letting her see how serious and deep his own feelings are for her. His unwillingness to immediately melt into Sakura's arms -- because neither has resolved their issues with Sasuke -- proved that Naruto isn't a pushover nor does he see himself as Sakura's consolation prize. In a roundabout way, Naruto seemed to be saying, "I love you but you can't have me that easily."
It's probably that last thing there that made me like Sakura's confession so much. Although it was frustrating to see them so close to understanding each other, and so close to getting Sasuke out of their way, it would have been too easy. I love it that they both walked away on a more level playing field.