I'm surprised this is as close as it is.
When I started learning bass, it was Geddy Lee and Steve Harris. Steve was all about the right hand and playing fast rhythms. Geddy never played anything as fast as, e.g., Run to the Hills, but he was all over the fretboard. He remains my favorite bass player of all time.
When JM came along, he put it all together in one package. As much as I love Steve's playing, he's somewhat one-dimensional, and JM is the superior player in every way. Of course, Harris brings things to the table that JM doesn't -- e.g., songwriting and production.