Sakura is not that flat-chested as to say Rukia from Bleach or if we are going by Naruto, Karin. She just has them small. Probably the smallest out of K11 but whatever. Besides, I quite like her figure, especially the way Kishi drew her in her summer look back then. She has that athletic body which is pretty nice to me. Plus, she does have "that". I'll leave you with that. I'm already sounding like Jiraiya.
That made me laugh so much.

I love how honest Jiraiya was about his lustful nature. I really miss him.
As for all this talk about Sakura's body and attraction and love, I agree with the other posts here. Sakura's body type will appeal to some, while Hinata's will appeal to others. Sakura is very athletic, and in my opinion her more streamlined body visually complements her physical ninja qualities -- concentrated strength, power, and evasion among others. (Tsunade obviously has strength too, and the opposite of a streamlined body, lol, but she's supposed to have a mature figure.)
What's important is that Naruto likes and accepts Sakura the way she is. There's no explaining physical attraction. It just... happens. Back in chapter 3, Naruto thought of Sakura as "a total babe," and since then it's become obvious that Naruto feels a complex and complete attraction to her. It's like Sai said, Naruto smiles a lot around her. Something about her charges his batteries. Even Sai knew, as he stood there and could feel the vibe, that Naruto is in love with Sakura in a real and meaningful way.
Naruto's interactions with Hinata have never had anything even close to the same giddy, smiling, "you make me happy just being near you" quality that his moments with Sakura can have. As I have pointed out before, when Naruto realizes Hinata is seeking acknowledgement he sounds like a leader. A coach. He tells her she's strong and a good person, and she should believe in herself. It's focused on Hinata's feelings and contribution
as a ninja.
By contrast, Sakura rarely needs or seeks acknowledgement from external sources about her skills or capability as a ninja. She interally doubts herself and her feelings, and agonizes over her personal mistakes, but she tries to take control of them herself -- albeit with questionable results, lol.
And really, one of the only clear instances of Sakura expressing a need for acknowledgement was also back in #3 -- when she told Naruto-henged-as-Sasuke that Sasuke's notice and opinion of her was very important. But despite how that must have hurt his feelings, what was Naruto's reaction? He admitted to himself that he was starting to understand what he loved about Sakura.
So far, at least, Naruto only relates to Hinata in terms of supporting her as a fellow ninja. He relates to Sakura in very personal terms. She's in his heart. There's really no comparison.
ETA: Another moment when Sakura sought acknowledgement? Was to ask Naruto if he thought she looked more womanly. Also very... personal.
Edited by KnS, 09 December 2012 - 01:51 AM.