Using Metabolic Drive is not a base line, it's a supplement created for convenience. You're still better off with solid food.
Given that, I agree that swapping Carbolin 19 for Metabolic Drive was not appropriate, as it's like comparing apples to oranges. Carbolin 19 is for building and maintaining lean mass. Metabolic Drive is a protein supplement.
My guess to Eclectic is that you were just expecting too much out of the Carbolin 19. You really need to take the full dose, for a minimum of 30 days to see any real "benefit", and then if your diet and training is sub-par during that time you might as well not even take it.