I think you have to realize what that means. What you're looking at is that people who own houses in this country are more affluent and therefore are less likely to be in core need. It's not because they own housing that they're not in core need, but they can afford housing and they probably weren't in core need in first place.
I'm not trying to equalize everybody's level of income, but we have to be realistic. Homeowners tend to be more affluent, it's that simple.