Thank you for your question. Same efficacy - 20-25% average reduction of fat, however, with the CoolAdvantage applicators you are treating a larger surface area in almost half the time and with 45% reduction in bruising. We have seen a huge reduction in side effects with using the CoolAdvantage applicators. The larger surface area technically means more area treated but that is relative to who is being treated. Each person had different needs and depending on the patient's body, the traditional applicators might be a better fit, therefore, a better result than the CoolAdvantage. The sizing differences are below; Traditional CoolCore/Curve/Fit 110 sq. cm CoolAdvantage Core/Curve/Fit 122 sq. cm CoolMax 275 sq. cm CoolAdvantage Plus 201 sq. cm