M1T is the 5 alpha reduced version of Dianabol - methandrostenolone - IIRC, so in that respect Dianabol - methandrostenolone - would be more similar to testosterone (structure wise) than M1T which is another 'step' away.
M1T is the harshest steroid available on the OTC market. It is much more liver toxic than methyltest and will deliver much more results relevant to bodybuilding than methyltest. The latter is good for aggression and strength.
Methyltestosterone is a 17-alpha-alkylated anabolic steroid used to treat men with a testosterone deficiency. It is used as a feed additive to produce predominately male populations of tilapia. It is also used in women to treat breast cancer, breast pain, swelling due to pregnancy, and with the addition of estrogen it can treat symptoms of menopause.
17-Methyl-1-testosterone is essentially a derivative of Testosterone but more stable. Testosterone is essential for the development of sexual characteristics and growth of the body. 17a-Methyl-1-testosterone has been widely used by athletes and bodybuilders.17a-Methyl-1-testosterone is used primarily by weight lifters and professional wrestlers. Many athletes also claim that the drug improves their ability to perform exercise at intense levels.