"Words can be very important but if they are set to a naff melody or performed with a poor arrangement,"
Similarly, if they have great tunes and sung well, but accompanied badly, they are equally rejected - as should be the case.
Good singing can transform a "naff melody" into an indefensible aspect of the song - some of our greatest ballads have melodies, when separated from the words, are as dull as ditch-water.
Peggy Seeger once gave an excellent lecture on accompaniment in which she said, If you find yourself listening to the instrument, the song is not working".
She also said, "The first thing to decide about accompaniment is whether it is necessary - if it isn't don't bother".
Jim Carroll