Burn fat? well.....not directly.....
Increases protein synthesis? Yes....that is what AAS do.
As for you 30 mins+ cardio a day....I'm no biochemist, but that could be adding to your dip in bodyweight.
Common knowledge from the boards, and from my own experience, has taught me that Tren does appear to help with lowering bf....maybe b/c it's so androgenic....maybe it helps with water balance....hell, maybe it turns bodyfat into kryptonite.....
The words others have spoken about trustin the mirror over the scale holds truth also. If you're stronger, harder, and ligher....chances are you're leaner!
Good luck, keep lifting strong broseph.