It will effect liver mg for mg roughly the same as another 17-aa oral.
Each molecule has the 17aa alteration. And assuming the molecular weight is roughly the same for most steroids (x amount of molecules = 1mg), than 50mg of one steroid should have the same effect (17aa) as another 50mg steroid.
Ive heard of other chemical factors being a consideration, but Id believe the 17aa is by far the prevelant condition.