For me, genius ninja is...
1> finish the enemy as soon as possible when you have chance
So in Neji vs Naruto and Sasuke vs Naruto, it showed Neji and Naruto are not genius in my opinion
2> withdraw when you don't have chance.
Shikamaru did it all the time.
3> Avoid attack enemy strength, but the weakness
Naruto always attack enemy's strength, that why he always had hard time
4> Does the writer wants him be a genius or not
everything we says need to pass by the writer ^_^