It's not intrinsically better. It's just a different type of test. And which type of test you want to use and when is going to be based on your goals as an orga

It's not intrinsically better. It's just a different type of test. And which type of test you want to use and when is going to be based on your goals as an organization. 5000 unit tests times 3 seconds is 4 hours, isn't it? Compared to 9 minutes in the former case. That matters in some organizations.