I feel back then quality played such a small part as to be inconsequential. billy Joel came out with his Innocent Man LP about the same time. A few others as I recall did well then too. most were well recorded.
Add in a promotional budget of 3/4 million bucks which was unheard of then... MJ launching the video on MTV which ran the promos for weeks in advance... that got a lot of eyes and ears on it that it would not normally have had.
A great recording studio and Quincy Jones did not play a big part in the sales initially..
We sold out that day and had ordered more than we ever had previously of any album. that kept up for weeks. trust me people hadn't even heard the whole album and it flew off the shelves. neither, by and large, did the crowd buying them have the wherewithall to own a great outfit on which to play them, save for Daddy's, perhaps.
It was THE latest big deal, given the press that was paid for it, it darn well should have been too..
but the kids/people coming into my store then to buy them weren't applauding the quality... just that it was the latest MJ album that even had Vincent Price on it. Most were hearing it at the clubs not at friends houses. It did sell well outside itÂ’s normal cultural arena, as the cuts were diverse and the appeal was very broad.
in retrospection, one can attribute quality as a factor to the bulk of the sales for that record, yet still I feel it would have had a very marginal effect on the total sales receipts.
I heard it several times on various outfits and formats. the quality was good but not astonishing. I'd say very good for pop music at the time. I never bought the recording myself... and gave away the SACD version of it someone had given to me.

