Honestly, I wouldn't think too much about this until you have to, especially if the school that you interviewed at but have not been accepted to is GW. They interview a lot of people and accept a smaller percentage of interviewers than most schools.
That being said, I don't know much about VCU aside from it has a solid reputation. GW has had issues in the past with its accreditation but has gotten passed it. From my experience there, they seem to emphasize international opportunities and cultural exposure as it is in DC. My biggest issue with GW is the cost of attendance and the cost of living in the DC area. It is outrageous. I'd go with VCU if you are resident of Virginia.