If such a hyper bacteria were possible it would have happened a long time ago. Bacteria must adapt and compete on many axes, there is no silver bullet. Don't forget that antibiotics were invented by nature (penicillium).
But not delivered in anywhere near the same concentrations and across as many different delivery systems. It's one thing for a natural bacteria or virus to develop. It's another to have them artificially transported in ways which nature could only dream about having. THAT's the bad thing.
