I think its status as a metal classic has more to do with it being his debut solo album. I dunno, I think it's a bit cheeky to put that in the top 10 alongside two Black Sabbath albums.
EDIT: So I was just curious and was looking at the Top 100 Metal Albums according to RYM and it's uncanny how similar the lists are. I mean #1, #2, and #6 are the same
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