He said it clear. She looked like Sakura. Do you know what word "look" means?
*checks dictionary* So that's what it means!!! -_-
He said that Kishimoto's wife looked like Sakura, right? Sakura is pretty. He called Kishimoto's wife pretty.
He likes his main characters even more.
Yet in nearly all interviews his favorite character has always been a side character. Eg. Lee, killer Bee.
Only, Sakura is the girl he loves, not Hinata.
Only Naruto has never SAID he loves her. By said I mean verbally, loud, clear and the three words "I LOVE YOU" or "I LOVE SAKURA". I will believe that Naruto loves Sakura when he actually says it instead of the fans putting words in his mouth. Hinata loves Naruto. Sakura loves Sasuke. They have clearly said it outloud and meant it. When Naruto says it, I'll accept that statement.
Naruto can love Hinata. As soon as she confessed I'm sure that Naruto went from just seeing Hinata as a precious friend to a "possible love interest" hence he hasn't replied yet.
And being a main character has squat to do with anything. Just look at DBZ, a manga Kishi has stated to be inspired by. Goku ended up with a SIDE character, not the main heroine.