I can tell you about the software side on which I have some experience. Spiking neural networks are strictly more powerful than conventional neural networks whi

I can tell you about the software side on which I have some experience. Spiking neural networks are strictly more powerful than conventional neural networks which in turn are strictly more powerful than hand-coded rules engines. So the idea is that neuromorphic systems will some day supplant conventional neural networks in the same way they supplanted rules engines (e.g., for machine translation). However, as it stands the theoretical benefits of neuromorphic hardware has not yet been proven. Which is perhaps because hardware and software needs to mature... Like how neural nets were thought of as toys for many decades before they became practical. More brainlike doesn't necessarily translate to higher performance. I'd say the big catch is the huge advantage conventional neural nets have. In hardware and software support.