re: How does Bama's current run compare to other dynasties in their prime?

Florida 06-09 was better than USC's "dynasty".

Now to the question, in line with that Florida run (not with the 90s run by Florida in terms of SEC dominance was and still the biggest run since the Bear),

Comparable but behind 90s FSU (which screw them and it was in large part of the product of the ACC but still- 14 straight years in the final top 5.

Not close to Nebraska which from 1993 through 1997 was essentially a missed 40 yarder and failed 4th down stop from winning 5 consecutive national titles.