MBA/PGDM

Both are better.
It depends from college to college.
PGDM is an autonomous program which is approved by AICTE.
MBA is a program which is affiliated to a university.
Colleges which offer AICTE approved courses will also offer PGDM not MBA, for example XYZ College is affiliated to ABC University. They offer MBA course affiliated to that university, the same college is offering AICTE approved course which means that they are offering PGDM which is not linked to the ABC University.
Typically, if any PGDM is to be equivalent to MBA then the course duration should be 2 years, a 1 year PGDM will not be equal to MBA course.
Even IIMs, XLRIs do not offer MBA degrees. They only give PGP Diploma or PGDM since they are autonomous and independent bodies.

Hello, You should choose a course on the basis of your interest and not for only settlement. I am sure while you may select the course for which you are interested, you may end up performing it better academically. More than that, it depends on your interest and background as well. If this is a Masters which is STEM focused, you may have up to 3 years of stay back in USA and MBA in most cases would be a 12 months only. So, you are suggested to see your background of education and your interest in pursuing a technical course of Masters in the same/similar field or you have a few years of work experience and now, you may want to learn and excel in management skills, then MBA suits the best as it will give a better growth to your career. All countries will have their own perquisites and standardized test requirements which you should be taking like GRE, GMAT, IELTS or TOEFL before you apply.