Absolutely justified. Its about the big picture. Ross opens doors for you which Marshal would not.
One thing that I have learnt from this entire MBA search process, it is that network is of utmost importance followed by location. Rankings and curriculum are secondary. Also, in future if you ever wish to return to India, Ross has a bigger alumni presence.
If finances are in place, go ahead with Ross. You will recover the extra money spent in 2-3 years.