no because the es version has SEVERAL new components to it on top of other ingredients that are enhanced higher than they were... its not just the same ingredients being added to... the es version had a major overhaul and was formulated to use in pct while the original version, although used in pct and effective, was initially intended for on cycle use... i would recommend using the classic on cycle and es in pct...
You can't go wrong with either one. They are both great products. However, the best way to utilize them both is HCGenerate for on cycle use, and HCGemerate ES for PCT