Testerone is a drug that hit certain receptors with certain binding affinities. In fact, it is this receptor-profile that gives testosterone it's beneficial effects, side effects, and all other ascribed properties. In fact, the pharmacologic properties of a drug are dependent upon it's receptor-profile; this is an axiom of pharmacologic science. What causes the receptor-profile? Well, whether a chemical binds to a receptor with a certain affinity is due to the electron orbitals and valences of the compound. All the chemical interactions of a molecule (such as receptor binding and affinities) are reducible to the chemical structure of the molecule; this is an axiom of chemistry.
Since all "functions" of a drug are due to its receptor profile, and all chemical properties of a compound (like its receptor-profile) are reducible to its structure, if a drug EXACTLY matched the functions of testosterone, it would have EXACTLY the same chemical structure (i.e. be testosterone). So, in answer to your question, it is logically impossible for a different drug to have the same functions exactly as testosterone.
Furthermore, from a practical point of view, most of the synthetic testosterones (deca, primo, etc) were invented to avoid certain "functions" or properties of testosterone. So why would something successfully invented to "drop" certain "functions" of testosterone, magically have all the properties of testosterone readded 40 years later? Really, the question makes no sense. What are you really asking? What functions of testosterone do you want to keep, then we can help you better?