Austin isn't where KLTO gets any numbers, the signal is non-existent in the city. However, once you cross over the hill on I-35 going into Buda, the signal appears. I would bet any numbers for KLTO in Austin are from San Marcos, Kyle, Buda fans... strictly Hays County. Same way Austin stations show up in the SA ratings with good numbers in Comal county.
I agree, Austin could use a good active rock, but people always say 'what about what KLBJ used to be?' KLBJ (when it was Active Rock a few years ago) could never be compared to 99-5 KISS! KISS is likely the best Active Rock in the country. (IMO)