NC's media markets = chopped liver for May 6's primary?

OK, so there's been some talk about North Carolina's media markets on the night of the PA primary (and the apparent Clinton win) and how much the Obama & Clinton campaigns will have to spend leading up to the May 6 primary. One commentator mentioned that there were only "small" markets in North Carolina. Really? Well, according to the latest Nielsen Media rankings of Designated Market Areas:

• #25 in the nation: Charlotte (1,085,640 TV homes)
• #28: Raleigh-Durham (1,039,890 homes)
• #46: Greensboro-High Point-Winston-Salem (671,890 homes)

For those folks interested: 15 counties out of the 100 North Carolina counties in the state typically deliver 50% of the vote in North Carolina elections. The majority of those 15 super-counties are along the I-85/40 corridor, which basically starts in Charlotte (Mecklenberg County) up through Greensboro-High Point-Winston-Salem through to Raleigh-Durham (Wake County).

I really don't think that NC's media markets, which will focus most of the attention of the electorate on May 6th, should be classified as "small" by national commentators.