I don't think he was trying to say the Beatles weren't pop, he was trying to say they weren't merely your average, typical pop band. They were at the top of the rock/pop world in terms of creativity and musical composition, I don't think there is any question about that.
There's really no point in comparing the Beatles to sun ra, they were completely different breeds. And I don't think NYSPORTSFAN ever claimed the Beatles were as experimental as someone like sun ra.
Janszoon said something about people thinking the Beatles were some kind of magical beings, and their music may have been praised by certain musicologists, but they laughed at any praise of the kind. Sun Ra is the one who claimed he was from sort of angel race that originated on mars rather than earth