The orators in ancient Greece and Rome had a taxonomy of oratorical styles, from plain to ornate, and recognized that you could be successful in any style, and that certain styles were better suited to certain contexts.

Others are saying that the purpose of oratory is to communicate, but I would say the purpose of oratory is to persuade. Cicero has some complicated sentence structure, but if you can follow it, it delights the mind and just gets your blood moving.

So perhaps what you're saying is that Jobs was more like Lysias than Antiphon.