Placements depend upon colleges and not course.
MBA- A degree course offered by the colleges affiliated to the universities. So, only universities can offer MBA programmes.
PGDM- A diploma course offered by the institutes that are recognised by the All India Council for Technical Education (AICTE) and which are autonomous and not affiliated to any university. However, accreditation by Association of Indian Universities (AIU) makes an institute's PGDM course equivalent to an MBA.
Famous MBA institutes in India:
Faculty of Management Studies, University of Delhi.
IIFT (Indian Institute of Foreign Trade)
JBIMS , Mumbai
Famous PGDM institutes in India:
IIMs (Indian Institute of Management)
XLRI (Xavier School of Management), Jamshedpur
SP Jain Institute of Management and Research, Mumbai
Hope this helps you.