I do not have exact numbers but I can tell you that it is comparable to script AI's from my own experience. I have taken the following in the past:
Letrozole
Exmestane
ATD
6-bromo
Old Formadrol with the androstane
T-911
Novedex
6-oxo
I got the ache/dryness in the joints on t-911(at three a day) that I got with Letro and to a lesser extent Exmestane. I had a jump in libido as compared to the drop that came with most of the above, exception being Exmestane and bromo. I also had zero flare ups while using t-911 and I am gyno prone personally with anything hormonal(i have pubertal gyno and t flares with any hormone product including stuff like mass fx and activate.)