I do not have overall data ,but two of my friends graduated from BU MBA in the same year, both cannot stay in the US and the placement I think is just so-so.Maybe my sample is too limited.But in the level of BU and GWU,I suggest that you probably should choose the less expensive one.
I'd say go with the full scholarship. they are on similar levels. And you cant beat a full scholarship. Because its no-risk-at-all, and you learn great stuff for free! Plus marketing is not very regionally oriented, so you could theoretically graduate from ANY school and get a great marketing job.