Not True to the game/anime/manga
I'm the biggest Naruto fan on the west coast. I've kept up with the anime/manga/ and even the games. This game isn't on "Super Famicom" from what the other user proposed. The sprites were taken from the GBA-SP games. Though the fighting was well prepared, the ending moves should have stayed true to the anime. For example: "Have Naruto Use the Kage-Bunshin No Jutsu" attack as a finisher, or have Sasuke use the "Sharingan" and change in the "winged demon form" he changes into from the Anime.
You could have also used the same background as the anime episode in which Naruto & Sasuke fought.
I'm giving you slack since this is your first flash, but it should have been thought out more & researched if you didn't watch the anime/read the manga/ or play the games.