M1,4ADD is really not comparable to M-Drol.
As for comparing it to P-Plex, I get better strength gains from M1,4ADD but better size from P-Plex. Gains of course vary by the person
x2 It's always tough to compare apples to oranges but P-Plex would be the closest OTC anabolic comparison for M1. IMO P-Plex slightly better for overall dry mass whereas M1 slightly better for strength gains.