goku is written much like superman superstrong invincible and shoots lazers. basically. there are millions of hero's, villains and characters with cooler more complex and powers beyond imagination. they loose against superman and goku. why ? because there written to win the fights. not because of something cleaver work around like batman or new tech like iron man. the writer of the story decides they win and they do. there are a million ways a comman man could kill these two, if goku had real limits. but they don't. no matter what the talk at the end of the day goku always gets an auto win. if not they just wish him back to life over and over.