Dmg Reduction is great reduces all damage done to ur team nin and tai damage. Now tai and nin *ion pretty much is a def breaker, as whatever u have in the tai or nin pen it adds some damage not much. probably worst stat of all in my opinion.

they don't want to tell us exactly how they work, but rumors say damage reduction decreases by a flat amount the total damage you suffer (but none knows what %).
Ninjutsu and Taijutsu *ion should, theoretically, reduce the effect of the enemy Defense and Resistance (rispectively) but none knows by how much do they affect it (also because none knows how big is the effect of defense and resistance neither).

nin and tai *ion doesnt work at all in this game... the difference is like 15-20 dmg more .. for example if i hit 7k with nin and pene maxed out i will hit 7.020k

Do you have anything to back this up? And like someone said above, I believe the *ions are meant to break defenses, despite adding a little attack to it. (Anyone with actual evidences to support their cases would be nice too, because I sure as hell don't ;P)

i had nin and tai pen gold on my eight gates up to level 8-9 giving about 500-700 *ion, got rid of them and im dealing maybe 1 percent less damage from it. In addition, since i replaced them with def and res its made me live longer to do more damage.

Hey

Our friendly neighborhood moderator Achroma has covered specific stat lines.
You may find it here

Hopefully, that helps answer the question!

Thank you so much

Can someone rephrase what Achroma said in that answer? Too many questions in one line to know exactly what he was referring to. Does that mean it only removes defense / resistance and doesn't *e stuff like Hinata's dodge?

He was referring to Defense/Resistance.
It doesn't affect things like Hinata's mystery or Dodge.

If you have any questions, feel free to post on that thread.