In reply to Beyoncé Jackson.

Diana is only underrated vocally within a small sector of those who put black singers in the stereotypical box of having to sing "black," which means you have to sing loud and do all kinds of vocal acrobatics.Most of that small sector of people are normally other blacks who grew up in church and believe that that way of singing is the standard for singing. But, most people in her day, especially mainstream pop listeners, did not underrate her vocal abilities, they revere her vocals and her unique interpretation and delivery of singing.Whitney is the only pop diva with a gospel sound and "black/soulful" styling that was embraced universally as an international Pop icon, like Diana. The rest souful stars with bigger voices, are known or revered as soul icons or stars and aren't as mainstrean.