I use to think the same way you do with that bench scene, but not anymore. The bench scene will not be the reason why Sakura will choose Naruto, something that I believe she already did. The bench scene will be used to assure Sakura that Naruto was always the right man for her and she glad that she made the right choice.
You also mention something about her confession, her confession was not created because she starts thinking about Naruto in a romantic light, was because of guilt, I mention before that she has feeling for Naruto but she has not thought about them I also gave you Yamato's speech has reference, she was shocked when he told her how strong she feels about Naruto.
With Sasuke is not the same she desire to be with him since she was 8 , is truth that Sasuke never gave her a genuine reason to change her crush to genuine love proven by her flashback plus is not something she can decide to stop from one day to the other, look at Karin he stabbed her and was ready to finish her before Sakura save her and Kishi still imply that she might still have feelings for him.
The moment Naruto, the person who Sakura cares about the most open up to her and she denies his feelings, that will be the only time you can say that she truly loves Sasuke and to be honest at this point I really doubt that she wants to establish a relationship with Sasuke, but very positive that she will love to address her feelings for Naruto at some time.
I agree with you, and I never said that the bench scene will be the reason why Sakura will fall in love with Naruto, in fact I clearly stated in one of my earlier post that that isn't the way I want Naruto to win Sakura over (if he hasn't already). I'm saying it will be the reason of how Sakura falls out of love for Sasuke, because we haven't been given a good reason for her to have been in love with Sasuke and for her to still have those feelings. The bench scene is the only major positive romantic moment that Sakura believes that she had with Sasuke (this part is speculating on my part, but, really, what other major moments they had together that implied Sasuke was into Sakura).
Also, I brought the confession up because at the moment there would be
no reason for her to at least START seeing Naruto as a potential love interest. I understand if she starts thinking about Naruto as a potential love interest would probably end this pairing wars thing, because we will know that Naruto will win, and the author will probably want to drag this out little bit longer. But, seriously, at this point, Sakura loving Sasuke makes
no sense, unless the scenes shared together (including that infamous bench scene) were a lot more important then they seem.