To me it seems that having higher estrogen levels would be counter productive, so steroids that aromatize at higher rates would be harder to get lean on. It makes sense that steroids we consider good for cutting are more androgenic, provide dry gains and do not convert to estrogen at a rate that something like dianabol would. I wonder if using an ai like arnold jr mentioned would be the solution for this....
Anavar, Equipoise, Halotestin, Masteron and Winstrol, are all common steroids used in cutting cycles that are far more anabolic than androgenic...Primobolan as well to a degree. I know a lot of guys here think Winstrol is a poor steroid and Equipoise is a better bulking steroid than cutting steroid, but in the real world these are regularly used in cutting cycles.
Anyway, as far as estrogen goes, you're right, more makes fat-loss difficult, but it's not that hard to control. For whatever reason, if you take testosterone and administer smaller doses more frequently, even with large esters it seems to help out quite a bit. If you do this with the use of an AI, there's really no reason you should have an estrogen problem. I think a lot of guys don't like AI's or think they're worthless because they normally don't have access to quality AI's or they simply opt for some low grade liquid forms.
I mentioned one cycle already, but the most extreme cycle I ever ran included 250mg of test-e every single day with 50-100mg of Dbol and 100mg of Tren-A every day. That was the most test I ever used, and for my purposes I think it was overkill but I was able to control the aromatase through AI use. I was able to control the bloating through AI use and keeping my diet somewhat clean.
Now I'm not saying the above was my favorite cycle of all time, I'm simply using it as an example.