Because they are, Mitsuki v. Sumire is the only fight that really stands out as different because of Mitsuki's fighting style, but compared to original series, they are all pretty lack luster.
Sarada v. Buntan was the most retarded fight of the series hands down. The funniest aspect of the fight for me was how SP tried to put science into the fight, yet Sarada was standing ontop of Lightning shark, and the water wasn't being electrified by the water. If your going to do something, at least commit all the way.
The only fight this series has which reminds me of the original series was the Sasuke v Kinshiki fight. It was smooth, action scenes were believable, and the content was superb.
Watch them all suck