Good measurements are not a guarantee nor necessarily synonymous with enjoyable sound. Great amps usually measure pretty well, perform well, AND sound good to our ears. We don't listen to measurements, we listen to sound and music. We can perceive things in sound and music that measurement devices cannot. This is why listening and subjective observations must be a part of any honest gear review worth its salt.
The funniest thing I saw over at that ASR site was a dude worried about his amp having less than "top notch" measurements, but the speakers he was using definitely did not have a flat frequency response anyway.
Don't get too hung up on this stuff especially if you don't understand it, man. The only thing that's truly important is that you like what you're hearing. If you like it and it sounds natural and realistic to you, then how "wrong" could it truly be irrespective of measurements?