This concept is key. Growth in the presence of antibiotic in pure culture on agarose plates does not necessarily equal pathogenic potential. Every adaptation probably has a cost to the bacteria, and if you throw in the immune system and other competitive bacteria that may not be pathogenic, those 'super bacteria' may be less super. All that said, as a microbiologist, antibiotic resistance terrifies me, with the current economics of new drug development being as daunting as the technical challenges.