Steve Jobs/Jonathan Ives ==> John Lennon/Paul McCartney.
John and Paul were both geniuses, but John vetoed (or encouraged) when needed and so did Paul: hence the genius of the Beatles vs the non-genius of The Wings.
I definitely agree that he was a huge part of it. I learned the other day that he actually played (at Lennon's request) the piano solo in "In My Life". Never knew he played anything.