What are your goals? Why these schools? What languages do you speak, and how well?

Other things being equal, pick the school where you best speak the local language. Take a look at Do you need to speak the local language? www.find-mba.com/board/34713

Hi Duncan. Appreciate your reply.

I wanted a masters degree in international management/management from an established business school. I shortlisted these schools after a lot of research, based on how the program is structured, the exposure and the return on investment.
LSE was also on my list, but I got a rejection letter from there.
I am from India and can speak English.
I have 4 months in hand and can start learning Spanish or French and hopefully get to a level, that can help me converse.
Al the courses will be taught in English, so I figured a little knowledge will suffice.

Kindly give your views and help me shortlist the colleges. I shall be very grateful to you.

If you don't speak French or Spanish, then focus on the schools in England. You can't get a managerial job with tourist-level language skills.

I plan to go to London after I finish my degree for jobs or come back to India.

If the course and the international exposure is the only criteria, which school tops in the list?

I don't see how these can be criteria: that reduces it to tourism. Of course a two year CEMS programme will be a wonderful experience, but if you want to work in London then Cass is the obvious choice (unless you do your CEMS year at the LSE).