Salutations -
I just wanted to chime in to see what decision you ultimately decided to make. I actually ended up in a very similar position to you (admitted to Cornell and Duke, despite having researched both schools the least). Although I am not an international applicant, my career aspirations are international in nature, and the global brand of the school mattered to me. I also have been leaning more toward consulting and away from banking, which weighed heavily on my decision.
Ultimately, I opted for Duke because of the greater variety of companies that seem to recruit there. Given that I may be open to exploring different careers, the breadth of companies that recruit on campus appealed to me. Had I a strong interest in banking, the decision would have been much tougher. It seems like the Johnson alums who reached out to me both had backgrounds in finance, and banking seems to be one of their strengths. If you're set regionally on NYC, I know that's also a strong suit for Cornell. Domestically, it seems like Duke has a slightly stronger brand, so if you're planning on staying in the US for a couple of years, Duke may have the advantage there.
One useful tool I've found, for doing research on alumni is linkedin:
https://www.linkedin.com/college/alumni ... 22&pt.psf=[%22job-function%22%2C%22current-company%22%2C%22location%22]&pt.pss=0&
Might help you get a better idea of where alumni end up, which may aid your decision.
One last point (and one I also grappled with over the past couple of weeks): Although they may not have been your top choices, they are both pretty solid schools. There are very few doors that the topmost programs will open, that you cannot get through if you are a top performer at either of these schools - it just takes a little bit more work. I like to think that it's better to be a top-performer and stand out at one school, than to be merely average at another. It may turn out to be an opportunity yet, that keeps you hungry. Either way, you end up with a pretty good starting point regardless of which direction you go.
Good luck with your decision!