Obito proved again that he is faster then anyone on the battlefield and hiraishin by stopping a sage mode giant resengan by two kyuubi that was teleported right to him.
Most of the battles naruto has fought using clones.clones aren't as fast as the real one.the last time he showed the freaky speed was when he saved kakashi from obito giant shuriken than after this scene juubi entered the scene
He has been keeping up with the 2nd and 4th just fine to me
To be fair, so is everyone, even Minato. Naruto's speed is far too overrated here, at least against fast Sharingan users.