Things are indeed looking good for NS, I'm not sure how to add to this.
I'll try to defend Naruhina and Sasusaku to make this debate theard interesting..
Ok, So...What If Naruto didn't say Sakua was his girlfriend right away because he was aware of Hinata standing right there? Maybe He still loves Sakura but he feels like it's just not going to happen. So he feels like pretending she is his girlfriend, just for a little bit.
And maybe after the war he will assume she would rather be with Sasuke. ( He would either stay single forever like Jaraiya, Or pick Hinata as a "2nd choice" )
But that's not romantic at all.. ( xD ...I'm a terrible NH defender...lol.. ) 
Anyway guys, feel free to completly destroy my NH defense.
As for SS....Sakura hasn't "gotten over" him yet, many SS fans think her not having a Fangirl reaction to Sasuke shows her feelings are deeper then someone like Karin. ( I like Sasukarin btw, but that's what many SS fans tell me...)
So, What are the chances that Sakura has "deeper feelings" for Sasuke? Many still use that love letter moment to prove that Sakura's feelings for Sasuke are much more then a simple crush.
The only real problem with the SS ship is....Sasake's lack of romantic feelings for Sakura.
( Still not sure how that can even BE a ship at this point, Sakura is single-handly holding it up. ( assuming she has those feelings...)
So, that's my SS defense. please break it apart and destroy it guys... 
I'll take a crack at this. If he was aware that Hinata was right there, and assuming that he loves her from an NH perspective, he probably would have denied it. Why would you lie about liking someone when the person you already actually like is in the same room? Again, NH perspective here. You have to remember that Naruto is pretty obvious with his feelings. Even Sai, who's known Naruto the least out of all the rookies, can even see that Naruto loves Sakura. I'm not going to pull out all of the examples, but it's pretty obvious both in part 1 and part 2 (see the build up thread).
SS is one-sided. There's no denying that. You could argue that NS is one-sided but the difference is that there is actual development that can be driven towards them being paired at the end of the manga. You can't do this with SS. There just simply isn't enough time for Sasuke to develop feelings for Sakura. And why would he for that matter? Itachi is his first love obviously XD. Likewise, there just isn't enough time for Naruto to develop feelings for Hinata anymore. Anything immediately following the Pain Arc would have been his chance. And for Hinata, there isn't enough time for her to develop herself as a character anymore. It's like her only goal in life is to live for Naruto. At least Naruto and Sakura have independent goals.
As for the love letter and Sakura saying that, "There's somebody else." Think about that panel where she's thinking about Sasuke. What's her facial expression? Is she happy when she's thinking about Sasuke? Nope. Not a chance. And what image of Sasuke does she see? This cold hearted blood thirsty avenger-- not the team 7 Sasuke. Even Karin could sense how menacing and cold his chakra was. This is not the same Sasuke that Sakura use to "love" (I'm not saying she doesn't anymore, but just give this some thought). But maybe I'm avoiding the question. Why does she say that there's someone else? I think she's just confused. Each time Sakura and Naruto have seen Sasuke since he left (Land of Iron and after he killed Danzo), he has made dramatic transformations in his character and in his goals. Think about how this has affected Sakura. That's A LOT to take in about someone you care about and it's gotta be worse for Naruto even.
...I hope that makes sense. 
I've never really debated pairings before. Totally new to me.