BIF- W the knowledge you got from Ralph's white paper, some of the basic equipment specs and the technical measurements that JA posts in those little sidebars, you can get pretty far down the road of figuring out if a speaker and an amp are clearly mis-matched. JA will frequently even point that out. Of course, every once in a while, there is a product that "breaks the rules" but if you mesh that approach w lots of reading and research, you should be able to get in the right ballpark.
I also think that some of the disagreement w Raul's approach may be based on differing goals. Raul says (I'm paraphrasing, so feel free to correct me, Raul) that his goal is to reproduce exactly what's on the recording. Nothing more, nothing less. My goal is to have an emotionally enriching experience listening to an artist's work. In my mind, if the hardware can deliver exactly what is on the software, but the music does not move me, then so what? It's kind of like living in Manhattan and owning an exotic car. The traffic, stop lights, potholes and pedestrians would not make driving it pleasurable? Taking this analogy further, if Raul is happier/more satisfied knowing that the car he is driving in NYC can go 0-60 in 3.2 sec and push 0.98 gs on the skid pad, more power to him.