Anabolic Strength of Tren vs Test

From memory Testosterone is supposed to 1:1 ratio of androgenic to anabolic strength. I remember reading somewhere Tren is 5 x stronger than test in both androgens and anabolic activity.

Does this mean you can accurately calculate the milligams of test vs tren. eg 500mg of test = 100mg of tren? Or in the real world is it more complicated?