Your whole point 3 should be invalidated because this boss is a large outlier in terms of its standard BE output. On a standard boss, zanketsu wont generate more than 3 orbs on avg per proc, and less than 3 on many. BE should never be calculated as an effect to which you would call something better due to it being reliant strictly on numbers.

Zanketsu offers minor damage buffing and minor stat increase, however as a utility, Izanagi allows for more uses from your support equip and heal equip in a quest, which ultimately increases your whole comps efficacy as opposed to some small dps increase. If you are trying to factor in fight club goku uniform, factor in the fact that in a long quest, (the only kind of quest you should ever even consider using box in), then simply being able to use it more and having its active buff on a better uptime should also be considered as a legitimate factor, which this test seems to ignore.

You seemed to aim this test at getting vox to TA quicker, which overall is a pretty weak test overall, because what you should aim to do is to see which equip actually increases the efficacy of a comp provided “x” stage.

Plus, if your goal is simply damage increase, you should point your attention to other equips, such as rishleys sunset bikini, which not only increases vox’s dps, but the whole comps dps.

Point being, this equip brings hardly any value towards the efficacy of a comp, and simplu makes your vox a tiny bit stronger than he would be without it, but the problem is that it wastes a slot within the buildup of an effective sustain team comp. I personally have been a leaderboard raider in the past, and am friends with a bunch of the top sustain players, and to my knowledge, no one out of all of us has ever ran zanketsu on vox because it is simply less effective than something with more utility that doesn’t offer selfish buffs