Comparing two cities

Please write a report BASED ON WEBSITE PROVIDED. A major component of a consistent compensation plan is the ability to make sure that employees working in different cities are paid comparable salaries. One of the variables to consider is the cost of living differences between cities. Using this web site (below) calculate differences in pay for two cities:San Diego and Dallas.
Website: www.homefair.com/homefair/calc/salcalc.html Are the numbers the same? Consider the relative validity of each calculation given by the website.