You can really hear what a poor vocalist McCartney is on the Motown/Beatles track.
The Beatles made some interesting and forward thinking music for sure, (Tomorrow Never Knows for example off their best album imho) but they did plagiarize a lot of stuff and had their ear to the ground listening to lots of contemporary groups, a rudimentary trawl through Deram and other similar labels output of the time proves that. Are we simply going on record sales here?
Interesting the way the phrasing used by the Beatles fans becomes ('And the Beatles are a great group, probably the best ever, and if you don't love them you're a loser who needs their ears washing out') at the thought of people disagreeing with the established world view that they are 'the best band ever to walk the earth'. Often hear Beatles fans banging on in this fashion