The runes from eight inner gates work, the difference between the stats on the runes is the effectiveness of each stat. So for example the runes that gives Ninjutsu and Taijutsu are more effective than the runes that gives Ninjutsu *ion and Taijutsu *ion. The reason many believe certain stats don't work is because some stats require a much larger amount for it to show an observed effect. Hope that helps!!

There is no practical difference between some stat not working at all or if it works but even a large amount (highest tested was lv 9 orange I believe) shows no observable effect, as it simply means that whatever amount that you can put on there does effectively nothing either way.

For injury and the *ions, perhaps, since the enemy's stats counter yours.

Damage reduction though can achieve at least a small effect if you manage to amass a ton of it.

Having no effect and having what is believed to be "no observable effect" are two different things. There are many factors that come to play but every stat does have an effect. Some just requires a much larger number to actually see an observable effect. That is why it is important for many people to use/upgrade stats that they believe are important or give the greatest effect. Not every stat is equal, it is up to the players to choose what they want to use. Some will choose to not use *ion because it doesn't give them the best benefit over other stats, that is again their choice =>

TLDR: Every stat does something, some stats just do more.

I believe the person who tested it did it on kakashi clone. So how do u know its even working?

Eight Inner Gates is a waste of money anyway, I've spent about 14 million on it and my power hasn't even increased by half a thousand.

lol u are crazy, you can buy battle armor for 6k cupon and u wont get 5oo power, yesterday I made 6-7 lvl6 magatama and I did not get 500 power, or you can spend 11 milion coin per ninja to strenghten your equipment from +85 to 90 and you will not get 500 power, and you complain about spending 14 million and not getting 1000?

Eight inner gates give you up to 202 initiative per quick rune added. That alone make the tens of millions coins spent there worth it. Gold and red runes for the 5 basic stats give a very big boost if brought to level 9 and secondary stats like damage reduction and combo you can add there are all but useless. But if your comparison is with spending coins on equipment strengthening then yes, as rough power gained the latter is better, but since initiative means to have or to not have the barrier up then you understand why inner gates is way better.

when a Lv9 Gold inner gate actually give no observable effect, then the game needs to re-balanced what it does for what its worth.

Btw Kakashi clone has a consistent stat for each level, rather than players who might stack certain stats in their set ups.

it actually works... i have red scorch and injury and a guy just switched to MB

he had 9.9k att i have 10k att
we did GI together and he did 1500 crit and i did 2200
and idk how much power it gives me but if i remove any i lose 200 power

1. Unless you two were using the exact same team (including talents) there could be other things that affects damage than attack stat
2. There are many different targets in GI, some have more defense stat than others. Did the two number come off the same number?
3. Damage is not a fix number but a range, have you done the same thing at least 10 times to observe an average?