I don't like the Beatles at all. Not even a little. And though I do really like Van Morrison, he's just off his rocker here.
I don't think it's possible to overstate how big the Beatles were in there time. (OK "bigger than Jesus" was a bit much) If what Morrison was talking about was historic musical influences he may be on to something. There the Beatles seem pretty small and fading. (not close to John lee Hooker, Blind Willie Johnson, Elvis, Bob Dylan etc)