They probably don't know why it does not work as intended and have no way of correcting it.

I'm sorry to tel you that the *ion runes are mostly useless. In the old forums there were thereadsof people who tested them and concluded they were a waste of space.

Injury deals with critical hits, so while the same threads concluded that it as not a good stat to boost, the results are debatable and not as clear cut as with nin/tai *ion stats.

Damage reduction is underated due to the ingame description which is rubbish. Sand runes will decrease damage received from nin and tai attacks! I remember a thread stating that the effects where equivalent to around 1/3 of the stat boost received from a similar boost in defense/resistance. In other words, a +90 damage reduction is equivalent to having a +30 def for taijutsu attacks and +30 resistance for ninjutsu attacks. I do not think the reduction stacks for nin/tai attacks, remaining equivalent to a +30 to either def/res in my previous example. Still it adds up.

The best are and remain the initiative runes (which as of now are only purple but I hope they will soon implement golden ones in an update soon enough), as well as the 5 basic stats: attack/defense/life/ninjutsu/resistance. Then i would favor explosion runes.

A case c*so be made in certain cir*stances for Gale runes in certain lineups, as well as Wood but only if its a red chakra rune. It's golden equivalent giving a max +200 HP per turn seems a bit underwhelming.

Can you give us some numbers on that?

How much damage (on average) does a 200 boost on taijutsu *ion results against someone who has almost no damage reduction? Who has high damage reduction?

We don't really need the foruma as long as we have some empirical data on the relative effects of a given number of tai/nin *ion v/s some fixed numbers of damage reduction.

That's why people test stuff. From what i remember the people who ran the test did averages on the damage increwase when using high lvl red chakra runes for Scorch and Corrision. Yet they saw no visible effects when they used the runes and when they did not.

These are the only type of tests w e can do, plus its consistent to what the vast majority of the players experienced.

I'm all for the devs to give us concrete info on the effect of nin/tai *ion. But at this point i'm starting to wonder if they even know at all. Naruto Online has many bugs, it would not surprise me that those stats where reduced to 10% of the intended effect due to a coding bug.

If a player of the chinese/taiwan version could tell us of these stats influence fights it would already be a good thing. Until then, I'm going the safe road and use the slots for chakra runes what i'm sure will be of use, so that's what i would advice others to do. It is only advice though and if somebody proves me wrong that would be even better, I could finally stop worrying that i could get a useless red chakra rune after millions of coins invested in them -__-.