It's close, but Billie Jean is just something else, there was like a whole year of my life where i pretty much listened to nothing else, i am slightly sick of it now, but i'm not joking, it's literally thousands of times i've listened to that song, could be as much as 20,000. I'm giving it a break for a few years and then i'll go back to it, but it was the song that started my fan journey for me. If i took Billie Jean out of thriller and replaced it with a less interesting song, then history would probably win this for me, but because of that song alone really, Thriller wins, i don't think some of the songs on thriller reached their full potential, like human nature his vocal take is sublime, but i don't think the instrumental sounds as good as it could, the song as a composition has an enchanting magic about it which is captured in moments of some of the live performances, it's missing in the studio version, for me thats one of the only problems with thriller, that i suspect human nature could be that little stronger.