it indeed is stupid to say how characters would be nothing without this and nothing without that... I hear nobody complaining about Guy's Taijutsu or A's lightning way to increase his speed.
Ofcourse you use your best powers in a battle and adapt your style to it. If you have guns, why would you fight your enemy with knifes??
Same goed for Teleportation Jutsu, Bijuu Chakra, Ocular Jutsu etc. etc. If you have that you obviously focus on it to make it perfect and make your own battle style more unique