Structural testing Vs Black box ?

Structural testing is more elaborate and better as compared to black box....is it correct?

We can not comment that structural testing is more better than black box. There are two things; in large and complex embedded system, if we want to identify which module is problematic, we will do black box testing as only white box testing will be time consuming. Secondly, in complex and simple both systems, first black box would be used to identify the module/system containing issue and then structural testing would be used for further analysis. So both types are equally effective. And testing is incomplete if any one of them is not done.