Search API and OOB search

Hi,

I am seeing different results set and order of results when using V1 search API call and using OOB search component.

Is search API not designed to mimic the OOB component ?

Do we have some more logic added in OOB search on results and their order?

I am assuming default V1 API search gives us results ordered by best sorting like OOB have

Appreciate the help.

Thanks,

Sachin