Congrats! I couldn't make it to either open house this year, but the impression I got was that Carleton's program is more exclusive and much more focused on international affairs then University of Ottawa. Obviously in terms of clusters, U Ottawa only has an "international affairs" or "public affairs" whereas Carleton had much more extensive cluster offerings. They are super similar in a lot of ways, they both have co-op and similar credit structure. University of Ottawa is set right next to the Byward market and downtown and Carleton's about a 15 minute drive from Parliament/market/downtown. I guess it depends what you are looking to focus on for the next two years of your life!