Lennon, I repsect dearly, and feel..artistic wise..he was always the one who shone.
But Mccartney, Musically, has the advantage. He is alot more natural when it comes to song-writing etc, and I feel is just better creative wise.
Early on in the Beatles career, Lennon was the leader, and churned a staggering amount of singles out..but in later years...these roles reversed..and we see Mccartney being the boss (in terms of workload).
He created Sgt.Peppers, and had the original idea for the Album Cover Design. He also went to Richard Hamiltons house when the White Album design was being made..and also created Magical Mystery Tour ( dont know if he wants to admit it). His links to the underground happenings of London in the early sixties, and his clever links to movements he admired (Maxwells Silver Hammer)
shows Mccartney to be ahead of Lennon and Harrison in the avante Garde scene, and while still writing classic like Yesterday, was experimenting into strange and wild noises which can be seen in later years.
His Perfect pick-up of Genre Songs, and Carbon-Style Repsectful wink at indiviadual styles (Honey Pie, Michelle, Helter Skelter, Your Mother Should Know etc) show Mccartney to be a skilled Song-Writer, and clever thinker.
I feel Lennon often gets credit while Mccartney is left in the shadow...which is due to many things.
Sadly, John lennons death owes alot to his status. Although John was a great muscian..one of the best..his death ultimately secured his role as being perfect and untouchable (something that is just not fair), while Mccartney etc went on, making mistakes (like everyone) but feeling the heavy blow of critical opinions and damaging cocktails of bad ideas.
John and Paul..needed each other.
I feel their solo stuff..(although good) was just not the same calibre as their previous works..as they needed one another to bounce ideas off each other..and say when a crap idea was suggested.
The Walrus...was Paul.
Let the Beatles Live on.