Sinatra by far as a music icon; people still listen to him/use his songs in movies and such on the regular. You can almost call the music timeless, as even in today's loudness wars pop-music its hard to find someone who doesn't like a Sinatra song.

People are just pretending to be die-hard MJ MUSIC fans because he died, seriously, hes been nothing other then a media story since the mid 90s, which has nothing to do with music. Thriller was an amazing album; but frank was active with a following for over 60 years!

Elvis, was too campy to survive, his songs are 50s rock, nothing more (he wasn't around long enough).

So as a Media Icon, Jackson for sure; Music, Sinatra.