Hi,
That's a good problem to have. Congratulations on getting into three good schools and you can't go wrong with either of them.
Having just finished my first year at Broad, I can share my two cents on this. First off, considering your scholarships - you can take Purdue out. MSU is a much better school (for the MBA), has better placement, and is well recognized in the Supply chain domain.
The real question is Wisconsin vs Broad. Both are strong in Supply chain and place a good number of students within the SCM functions post-MBA. My suggestion would be to ask Wisconsin about the scholarship for the 2nd year and have that confusion sorted out. Generally, schools when they give scholarships, give it for both the years, with conditions such as maintaining a 3.0 GPA in the first year and so on. So, I would first have that cleared with the admissions team.
Assuming, they give you the same scholarship for the 2nd year at Wisconsin,
pick Wisconsin. Firstly, you are an international student, and Wisconsin's SCM concentration is STEM-designated. That is a huge advantage. Second, Madison is a much better place than East Lansing, both from a living perspective and networking opportunities and their alumni network is wider spread. If I were you, I would pick Wisconsin. Also, keep in mind the current uncertainty. It will be a while until things normalize, so have an extended OPT in your pocket will mitigate some of the risks.
In case, Wisconsin specifically says that the scholarship is JUST for the first year, which I doubt they will and will be strange if they do so - You can pick MSU. Broad is still a pretty strong school and the placements have been solid this year. Many have gotten roles in Tech, Manufacturing, and Consulting companies in our batch. End of the day you are getting a great education at both the schools at the cost of peanuts. It's a win-win in any situation.
I hope it helps. Feel free to shoot any specific questions you may have. Good luck.