Hormones are esterified to slow their release into the bloodstream and prolong their duration of action by increasing their fat solubility. The esters used are just carbon chains of varying shapes and sizes, with a carboxyl group bound to and cleaved from the alcohol on the D ring of the parent steroid. Generally speaking: the larger the carbon chain, the more nonpolar/hydrophobic the compound meaning the depot will stick around longer and the ester will be cleaved at a slower rate by the body's esterase enzymes. So testosterone propionate, having a three carbon ester, will be released bound and metabolized more quickly than testosterone enanthate which has a seven carbon chain attached. In addition to altering the rate of release, the ester in use will alter the relative amount of hormone per weight of total compound. IIRC test prop is ~84% test by weight while test e is ~72% which I think is where you're getting your 15% number. But I'm not solid on those numbers. Anyway, so those are the two big ways that the ester used alters the curve and AUC of hormone release. That's good that you used the same dose location because injection site does play a role in the release as well, and I'm not trying to downplay your effort. but precise consistency between blood samples would take some serious doing. What I think you're overlooking though is that while each ester has an accepted window for when to get your blood drawn, these times aren't perfect and still won't always give equivalent values as far as where along the curve of hormone release your value lies. That was convoluted but I can't think of how to explain it any better.
Arimidex pharma grade does it's job
Anavar sislabs for a friend but he says it's legit
Anadrol sislabs, I got some good strength but my acne exploded , but my skin is oily too.
clomid and Nolva are definitely working now on 2 week PCT and my lipido is coming back.
Tren Ace Sislabs is one of the best I tried
Test Pro sislabs is the strongest Test I've ever taken , it's PIP is a little bad but otherwise lipido was unbelievable
Pregnyl brought back a little of my Balls back
Proviron was for a friend
Boldinone EQ sislabs , didn't try it yet but the reviews are promising .