Michael was a great entertainer, much more than being a musician per se. He was good at what he did, and pushed the envelope for his style of music. But nothing groundbreaking in the sense of what he did in his genre.
His entertainment skills- dancing & the moonwalk, fine tuning & polishing (huge joke here!) what others did prior to him, and him constantly/consistently reinventing himself were what kept him so popular. But for the word "genius" to be attached to him for those reasons, is not quite apt.
Musicians like J.S. Bach, Stevie Wonder, Curtis Mayfield, Hendrix, Charlie Parker, Paganini or someone that did something truly ground breaking that nobody had ever done prior to them, that's more of how I would attach the genius moniker.
He had his place in the world, and is certainly the iconic figure that many people of all ages were entertained by. It's a very sad loss...
Are you kidding?
"Groundbreaking" and Michael Jackson are SYNONYMOUS with one another. The man changed music and entertainment culture as we know it today. There would be no MTV as it exists today without Jackson. Remember that MTV was designed almost exclusively as an outlet for white rock-and-roll outlet. Jackson literally smashed the color barrier and made MTV the juggernaut it is today, opening the door for R&B artists, hip-hop, and other genres of music.
His contributions to dance and choreography are well-documented. Things we see today's artists do and is status quo, Jackson was doing some over two and a half decades ago. He revolutionized entertainment, onstage, on-screen, and on-record.
With the exception of Bach, perhaps, none of the men you mentioned can TOUCH what Michael Jackson has done. Contrary to what some news outlets have reported, it was Elizabeth Taylor (not Jackson himself) who gave him the moniker, the "King of Pop, Rock, and Soul" which got truncated (perhaps by those who felt that title stepped on the toes of Elvis Presley) to just the "King of Pop".
But, the King of Pop, Rock, and Soul is are more accurate a title for him, because he dominated in all three arenas of music.
The term "genius" barely scratches the surface of what Jackson was.