There was a section for riggers that talked about deckers vs riggers. The same thing they said applies to this situation. Why be afraid of a decker you could kill with ease? Sure he could brick some cyber you have (which is fixable, fyi), but then you pop a cap in his ass and its all over.
If I were a decker (which I will be soon, muhahaha) I would concentrate my efforts on things like vehicles, security systems, gun platforms, etc. Why would I go through the effort of bricking your gun or ware when you will just pull out another gun? And now you have a new gun and want to kill me. Nah, I'll get some giant crane to drop something on you instead. Much more effective.