MY OPINION ONLY but I do not thionk that the average everyday ED has that many great energy qualities in it. Most are an average caffeine content, about as much as a cup of coffee, and then they throw in some some taurine and a lot of sugar for taste.
For real energy drinks go outside the conventional market and get something made from a manufacturer that supplies Sports Nutrition stores. The Fitness industry goes way beyond "average" ingredient profiles and create drinks for the athlete looking for high intense sustained energy, not just something to keep their eyes open while they are in their cubicle.
Whether you think can or think you can\'t, you\'re probably right!