Different compounds. Epicatechin blocks myostatin, while laxogenin increases protein synthesis. That's why anafuse is the best of both worlds.
I recommend adding in IFN Most Wanted for a double dose of laxogenin and added ecdysterone.
The overkill recovery stack: (would be great for PCT)
Most Wanted + Anafuse + Ol Ep1c or Follidrone (so here you're getting a triple helping of all the ingredients)
If you're not on pct, add ostarine to the mix.