The difference between Amy Winehouse and Michael Jackson is that MJ had racked up years' worth of hits, and had thus built up years' worth of goodwill with his fans that, for better or worse, sustained him through his trial. Winehouse, meanwhile, basically came onto the scene already having drug and alcohol problems, and had not (previously) made any "deposits" into the "bank" from which she could "withdraw." Long story short, she will always be more known (if she is even remembered at all!) for her drug and alcohol problems than for her "music," if you could even call it "music."