First of all,Your last point do not make sense.Naruto cannot run at 'light speed'.What he can do is,dodge and possess the reflexes to,when faced against a light speed attack:lol.Me dodging a bullet=/=me running faster than a bullet.
Second of all,Whatever happens in the manga can be countered by whatever happens in the manga.Itachi said Jiraiya would kick his ass,yet later on we find out the dude was invincible.Madara thought Gedo Rods were his will manifestation then later on we find out Black Zetsu fabricated his ass:lol.
Similarly,in a real life situation,'fast' do not mean 'undodgeable' yet in the manga 'fast' indeed is another way of saying 'it is too fast for me to dodge'.I am not grasping at straws/point out which straw I am grasping at.Even if I have to go with your 'urgency' explanation;he did get blitzed by a lower form didn't he:lol?