I don't agree that it's because it's not possible to get the dynamics of the original source material; maybe it isn't, but that's really not my point. Everything being remastered is pushing the whole overall wave very high, to the point where the whole sonic effect is flattened. Compare the original CDs of Maiden to the remasters. To me, sure, the old ones are quieter, but so what? Much more "open", room to breathe. Natural sounding drums. The first tip-off to me that the mastering engineer pushed the waveform is drum sound. System of a Down--every kick, every cymbal crash, mush. Sepultura Chaos AD--beautifully done. But that was the early 90s. A very different time.
This is taken from
http://www.johnvestman.com/disease.htm
Most rock/hard rock/metal CDs in the last 5 or more years have been mastered with no range; the lowest wave is pushed up to the limit, flattening it out. I looked at the waveform of Greater of 2 Evils using Audacity, and it confirmed what my ears told me: ZERO dips in the peak wave, absolutely no dynamic range. So if something in the mix gets louder, it comes out sounding distorted; kind of like of static noise.
And what does it matter if it was remastered by George Marino? If I see his name on a remaster, I'm pretty sure it'll be a flat, hot CD.