I think it is a futile exercise comparing and contrasting The Beatles and MWF, or any two bands for that matter;
On the one hand, The Beatles did their thing, on the other hand, MWF did their thing.
Different strokes for different folks etc.. It boils down to personal opinion.
If you like both bands, as I do, then you should just like and listen, and not fall into the versus trap.
I feel, sometimes, perhaps, with some of the older Shadows fans, there is a general bitterness towards the Beatles.
A sort of "They stole their thunder" attitude.
I like MWF's material, and the Shads material, and I like the Beatles material.
Chart placings are irrelevant to me.
It's the quality of the music and what it means to me that counts more.