Some of those numbers seem very suspect. For example, it lists Houston and Boston as almost identical, with Houston slightly higher. Anyone who's lived in both cities can tell you that's ridiculous; the BankRate.com COL calculator shows Boston as almost 50% more expensive:

http://www.bankrate.com/brm/movecalc.asp?a=0&d1=100000&#...

The list above also puts LA significantly higher than SF, which is also ridiculous. BankRate has SF at 15% higher:

http://www.bankrate.com/brm/movecalc.asp?a=0&d1=100000&#...