Quite agree with you. I don't think the lyrics of Rock records sit comfortably with Soul singers. It was reported when Dylan offered Otis 'Just Like A Woman' Otis commented that 'there are too many words man'. And it always sounds that way to me. I think Wexler was one of the biggest culprits in attempting to crossover his artists this way. Some of the material Aretha recorded for instance left a lot to be desired - Eleanor Rigby, Let it Be, Long & Winding Road, The Border Song and even the Weight.
Mike