Well, first, even though it's long I hope you took the time to read it because I went into a bunch of detail why I chose each band as number one and two. If you didn't read it I'll reiterate, basically the Japanese metal scene wouldn't have taken off the way it did without Loudness in particular, even though both they and X are the most important metal acts in the country's history. Basically, Loudness got going and experienced massive success both much earlier and way more wide-spread (internationally) than X Japan did, even though X Japan outsold them in the long run. Loudness achieved every goal X Japan had set for their career, and Loudness even achieved several that X Japan never did, like selling a whole bunch of albums in America and touring there to a pretty large degree of success. There's even footage out there of X Japan playing old Loudness songs from their early days, so it's evident the impact Loudness had on everything including X Japan's eventual run of dominance. I should state, X Japan are my favorite Japanese metal band of all time, however trying to stay as unbiased as possible when I made this, in the end, I couldn't put X Japan in front of Loudness for the reasons above and as stated in the article itself. I hope that could clarify my pick for them as number two.