boy I think Jeri is so right on that. It is what it is, if we like a song great, if not ... then we pass. It is impossible to compare since taste is like snowflakes, all different.   It also lays in the ears of the listeners. I had a friend here in town tell me one of my songs reminded him of Landside by Stevie Nicks ..

completely different melody day and night, but yes, Landside does have an AM chord also in it LOL

but the thing is, he hears it where no one else does or would possibly hear it since it is so different.   All in all, every country song, with the C, and the G and the D and the minors yada yada, been done only organized different. Doesn't take away from the music I think what is truly unique in any song most likely is the lyrics only.