Here's an analogy of how *I* think of the ADA method versus the other methods (let's use EI dosing as an example). The ADA Method is the equivalent of Organic Lawn Care and EI dosing is the equivalent of Conventional Lawn Care. Both methods will give you a nice green lawn, but the Organic Lawn Care system is a better method. (If you don't understand this analogy, I would highly suggest reading the book "Teaming with Microbes" by Jeff Lowenfels and Wayne Lewis - It will change the way you view organic techniques and conventional fertilizers and methods...)
Personally I think this is a poor analogy. ADA is a complete method and EI is pretty much dosing. There is more to lawn care then just feeding the lawn.