Unfortunately, your ignorance cannot be surpassed with this greatest statement, whether the context is with the anime or manga viewers or the villagers in the village. Let me just state the obvious:
1. He's the protagonist. Hence the title, "Naruto".
2. He's the shounen boy who has the power to surpass everyone with hard work despite being looked down upon by other characters. The audience can familiarize with Naruto's character because he's the kind of character who can show people up for underestimating him.
3. Even if he had help from his comrades, or if most of his opponents were weakened previously to his presence, he still defeated him. It's like saying that even if Haku sacrificed himself to save Zabuza, Kakashi still killed him. I don't see anyone complaining about this, so why Naruto?
4. He has the power to change lives with his philosophy. I believe a recent US President may have similar characteristics with this one, and a landslide majority of the population voted in his favour.
5. He's Yondaime's son. Yondaime is a prodigy, so many would expect great potential in Naruto himself. Contrasting to this is the White Fang and Kakashi. White Fang was a ninja genius, and Kakashi is now as well.
6. During the Chuunin exam, Naruto had equally fought Neji and won. Even up until now, the Hyuuga clan is considered a noble clan with a desirable bloodline, and Neji is a prime example of their clan's skill and during this time, was considered a "genius". He is now a Jounin while everyone else are Chuunins.
7. Etc.