Yes, Testosterone can be more androgenic in 5a-reductase rich tissues because its converting to DHT. (which is about 3x more androgenic than tren) Without 5a reductase though, trenbolone is more androgenic and anabolic than T.
A possible theory on trenbolone feeling "harsh" is from its emotional impact (irritability, aggression, insomnia, etc). It causes irritation to mucous membranes, and this may also occur within neurons that increase irritability on an emotional level. Its very similar with DHB (1T). It burns the heck out of any mucous membrane it comes in contact with due to certain double-bonds modifications on the steroid, and so when it reaches the brain, or other "emotion" neurons, it could be irritating them on a biophysical/biochemical level. It's also been theorized that its progestational binding "could" cause the temperamental aggression and irritability.
Something to consider -- there is lots of promiscuity... all these steroids are binding to multiple receptors and transcribing various cellular and genomic effects. People like to bucket steroids into "estrogenic" or "non-estrogenic" but its just not that black and white. Many androgens can activate "estrogen genes" even without converting to estrogen.
-FF