As you want to get the details of what is MIB course and is MIB course more worthy than MBA course so here is the information of the information of the same for you:

The ultimate aim of the Master in International Business program is to prepare students to work in a management position in an ever changing international environment where advanced technology and multicultural situations occupy an increasingly important place in the daily lives of companies.

Colleges offering Masters in International Business:
Jamia Millia Islamia, New Delhi.
Delhi School of Economics
Mohan Lal Sukhadia University, Udaipur, Rajasthan
PSG CAS
St. Joseph's College, Bangalore<
Central College, Bangalore University, Bangalore
Saraswathi Thiyagaraja College, Pollachi
Pondicherry University, Pondy
University Of Salford
University Of Rajasthan
HNB GARHWAL UNIVERSITY,SRI NAGAR (UK)
Bharathiyar University, Coimbatore
GRD, Coimbatore
Cochin University of Science and Technology (CUSAT), Kochi
Indian Insitute of Foreign Trade, Delhi and Kolkata
Symbiosis Institute of International Business, Pune
Gitam School of international business, Visakhapatnam
VLB Janakiammal college of arts and science, coimbatore
Badhruka institute of foreign trade

Yes, MIB can be given more grade than normal MBA as it teaches you the international business operations and it is thought only in few colleges