Just a reminder of what the horse says about lootpools.
I know that all!
There is no "personal" lootpool, so there is no granted 85-90% return on the long run.
There is seperated loot pool for every main proffession, no loot affects the loot of another proffession.
But it also says there is loot pools, at least one for every proffession.
What you do with this given information (and thats offical information given by MA), is up to yourself.
My point is your kill x numbers theorie to get an average of 90% can´t work if loot work with pools.
Someone else can drain that pool and then there is nothing left to get you back to your 90%, when you are actually in bad streak when this happens.
To get back to your 90% would need a way above average loot for you, what directly result in someone else losing more.
You still may do your statistic, and maybe its balanced out if you are constant active, but you definately can generalice it and say it balances out. History of EU already showed that there are unlucky players, that lost insane, while others covered their complete loss over years with hitting 1 ATH.
From my personal point of view, I would need to lose long time to get back to that 90%, as I hit some outstanding good loots in my career (TT wise, not items).
What is needed to survive in EU is beeing informed what actually happens.
If you would be my disciple, I would share some of my wisdom. I don´t want to share it on forum, as my fear is, when many players follow the same system I do, it very likely won´t work anymore.
Althoug I am not here to make big money, I try to avoid losing it. As long it works how I do it, I will continue doing it that way.
My strategy is different to what you suggest should be done to get that 90% return.
And I get that 90% returns aswell.
I don´t say your system is false, as long it works for you, well go on with it.
In my country we say:
Many ways lead to Rom, not only one!
Calling others who don´t follow your way a gambler is arrogant, thats why I feel pissed by your coments.