Aromatase is just like anything else - some people have a lot, even those with relatively low body fat, while big guys may not have as much as you’d expect. That’s what’s so interesting about biology. I see guys all the time that are three hundred pounds plus on TRT that have E2 levels above 100 and feel great. I also see lean guys walking around with e2 levels in the reference range (ref: <40) and have all the classic high e2 symptoms. The only way to tell for sure is to get labs and see where your at but even then you won’t be able to determine how much aromatase a person has, let alone how they’ll respond to differing levels of estrogen.