If you had two 'real' vials of cyp and enanthate and gave them to BBers in a double blind study, I guar-en-fucking-tee they would not be able to tell the difference.
Guys who say they blew up on enanthate but not cyp (or whatever) had fake/underdosed gear. No juice god will be able to tell the difference, I don't care how much he has done.
Andy