Gene Puerling had some serious, serious skills. The "muzak-y" sounds of SU are real, but they are also entirely superficial and only occasional. There is a harmonic depth there (literally and figuratively) that is not to be underestimated or trifled with.
A buddy of mine once described them as cotton-candy heroin, and that is not far off the mark, on either end.
As far as "better than the Beatles", hey, whatever. I don't know what that means, really.