Obviously the bond with Sasuke is going to be portrayed as the strongest and most prominent in the story. You haven't forgotten that is that very bond that finds itself at the core of the story? It's one of the elements that drive the main plot.
And Sakura is not. Which results in Sakura being less important part of Naruto's life as she does not receive the same amount of attention from the manga/plot as Sasuke.
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What I see wrong with your view is that you say every bond after Sasuke as to be on the same level. Killer Bee made notice of how Iruka has a special place in Naruto's heart and yet you think Naruto only views him as important as is just any rookie.
I can see Naruto valuing Iruka more than Shino.

Sasuke is the most important one. The rest we can debate much more. Is Jiraiya more important than Iruka? Surely they are both more important to Naruto than TenTen and so on. Where is Sakura placed? Not above Sasuke, IMO. Does she place higher than Jiraiya? I don't think so, but this is less supported than with Sasuke.
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The fact that that both Naruto and Sakura don't want to burden the other is what notably drives the plot between them. Whether they get together or not it is something that is meant to be addressed in order to have resolution between them. It might not be part of the main plot but that doesn't mean it's not an important bond.
Ah, it is an important bond. Just not the most important, or maybe not even so important than Naruto's bond with Jiraiya.
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I really don't get why you use the manga movie special as proof of anything. That was just meant to be a parallel to another scene during the movie. That movie in which they do have proper interaction and understanding of each other.
Movie special is such a good example of what I see as a general trend in the manga. I haven't seen the movie so no idea how NS works out on it.
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Just because he's that way with Sasuke doesn't diminish his care for Sakura.
It kind of does. Sasuke tries to kill Sakura, and who to does Naruto give a monologue about his feelings?
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Naruto's selfless sacrifice is not about giving up, is about making Sakura happy even if that means his feelings get hurt at the moment.
In part I, Naruto never had a real chance with Sakura. She was not romantically interested in him at all. So Naruto is willing to bring back the man Sakura does want, that is very nice of him. But massive sacrifice? What does he sacrifice, his not-chance with Sakura, his dream of the children with Sakura that Sakura never wanted with him? Naruto does make a sacrifice in PoaL but there was not much to be sacrificed there.