My post does not mean that Metallica is better—just that, objectively (money talks), it’s a much bigger band. Also, both bands are metal bands, so there’s naturally some competitiveness in the minds of certain fans. And yes, Metallica are bigger for the reasons you mentioned. Some (or many) of us may find those reasons unflattering or even despicable, but it’s also true that Metallica play much heavier music than Maiden, and despite that big disadvantage for a general audience, they still managed to become a top band, which is very commendable. There’s undeniable talent in the Metallica guys (just like in Maiden). The first four Metallica albums are great. The fifth one is also monstrous, although it marked the beginning of the changes.
A few days ago I saw a video report saying that Metallica had donated money to help some people achieve their dream jobs or something like that. Say what you want, but for me this aspect of Metallica is admirable and respectable. Because of how big they are, they run a charity and help others. Does Maiden do that on the same scale? No. So there’s no point in shitting on Metallica—they’re legends. And yes, they don’t create legendary albums anymore, but they’re trying and doing what they love (playing live), just like the Maiden boys. Metallica is not the enemy. They’re the advertisers of heavy music to the general audience, some of whom might later discover bands like Maiden, Slayer, or whoever you name.