Are we seriously comparing a T1 school with a T2 school in terms of quality?
Miami is the THIRD best school in Florida, whereas UofA is the BEST school in Arizona. The UofA is also ranked higher than any school in Florida in general.
Also, simply looking at overall starting salaries as a means of determining quality is a fallacious line of thought.
There are several career paths that get included into the overall average salary for a school. For example, UofA sent 22% of its 2006 graduates to judicial clerkships, and another 15% to government agencies. 8% went to academia or on to further degrees. 4% went to public interest jobs. In fact, over 50% of the 2006 class chose careers in public service or government. These are careers that are notoriously low-paying. To factor them into the overall average salary and then dismiss such an average as "low" is unfair to the school and to yourself. You are ignoring the important contributing factors to the average.
If you consider only average private law firms as a basis for comparison, UofA beats Miami, with $90,000 and $82,000 respectively. The high salary for UofA was $135,000 and only $110,000 for Miami.
Also, the 22% judicial clerkships from UofA is no small feat. Consider the fact that Miami only has 4% judicial clerkships.
By all standards of quality, UofA performs better.