Well a portion of the neutral fans, those interested in seeing the next Naruto film, and of course the NH/SS fans would have undoubtedly gone. While they may not comprise the overwhelming majority of viewers, it's likely that grouped together they could equal more than half. A decrease of about 50% sounds extreme, in my opinion.
Well the situation he said seems right. yeah 50% sound extreme but not so far from true. What percentage NH fan represent in the movie sale? That the real question. The situation talk about honest advertising ok. Let's see.
Advertising it honestly would have been a change of Title (since that movie isn't the Last Naruto movie)
Telling people it's just NH love story since day 1 of the movie and to not expected Kakashi or Sasuke play important part. I mean they show both of them in the trailer to sell ticket, but Sasuke appear 20 sec. in it. Kakashi like 2 min.
Most neutral Naruto fan though it was the last movie ad wanted an explanation about the ending. Some thought maybe it would have contain NAruto celebration as the 7th Hokage. Most people wanted refund because they expected a shonen movie, not a shojo, well most of them (SS fan, Sasuke fan and Kakashi fan must have felt screwed) . If the perception was honest, how many people would have gone see it.
You substract SS fan, Sasuke fan, Kakashi fan, neutral fan who expect something and fan that thought it would have been a shonen movie or just more action than romance. You've got only the NH fan (and even some of them, since the pairing war is over and the hype is gone, begin to see that they are victim of an asspull and Naruto act like a douche in this movie.) . How many people we got left. Only NH fan so how much they represent in movie sale is the real question. Since it hasn't been so well received, I believe 50% ain't so far off.