I disagree. Using the common definition, several of the Alter Bridge songs are very radio friendly (Open Your Eyes, Down to My Last, In Loving Memory, Rise Today, Brand New Start, Before Tomorrow Comes, Watch Over You, etc). And some of the Creed songs are not. (Bullets, Unforgiven, Pity for a Dime, Sister, Say I, Beautiful, Wrong Way, Inside Us All etc.)
But, in the end, I think that what is 'radio-friendly' is simply what people like. There are many, many songs that don't fit this 'radio-friendly' mold, but still get lots of spins on radio every day.
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