I have never found winstrol to do that and i have ran it from 50-100mg daily on several cycles. I am currently running Mast E at 400mg/week and it most definitely helps with estrogen, I am currently only taking 12.5mg of aromasin twice per week with no problems and I am on a pretty advanced cycle.as far as i know, only winstrol has shown to have light aromatase inhibiting properties.
Having explained all of this you definitely should not cycle with high bf. Gyno is not the only issue there are other possible problems like high blood pressure just to name one. Cholesterol etc. You need to forget using steroids and get your diet tuned up and start doing massive amounts of cardio, it's tough but it really works.