One thing one can do with these relatively digested "sound byte" style articles is look at the small print to find the source of the data (In this case, the Bureau of Economic Analysis).
The detailed data is available elsewhere on their site, but even their overall release summary has some more detail (from:
BEA: News Release: Real Personal Income for States and Metropolitan Areas, 2008-2012 - note that this is not a permanent link, so the content may change if they update the data)
"In 2012, the metropolitan area with the highest RPP was Urban Honolulu, HI (122.9). Metropolitan areas with RPPs above 120.0 also include New York-Newark-Jersey City, NY-NJ-PA (122.2), San Jose-Sunnyvale-Santa Clara, CA (122.0), Bridgeport-Stamford-Norwalk, CT (121.5), Santa Cruz-Watsonville, CA (121.4), San Francisco-Oakland-Hayward, CA (121.3), and Washington-Arlington-Alexandria, DC-VA-MD-WV (120.4). The metropolitan area with lowest RPP was Danville, IL (79.4), followed by Jefferson City, MO (80.8), Jackson, TN (81.5), Jonesboro, AR (81.7), and Rome, GA (82.2)."
Note that these numbers are inverted from the original article - so to compare directly, you would need to invert these numbers - e.g., Honolulu's 122.9 becomes 1/122.9 = 81.37