Real country music doesn't appeal to suburban middle aged white women, their teeny bopper daughters and misguided 4x4 on the interstate sons.
What Doc said. Both are great but lack the pop appeal needed to make it big as a "country" artist. If you don't talk about how country you are, you can't make it in mainstream. It works the same way for television, look how the Duck Commander guys utilized the word redneck as their non duck hunting related show made them famous outside of their historical audience.