I'm not sure where the "more selective" categorization came from, but it would seem to be a very broad grouping since Ohio State is near the top of the Big Ten (slightly ahead of U of I and Wiscy) for selectivity while IU is near the bottom with Sparty. Here are the actual statistics taken from each school's common data set for the 2015 freshman class.
Middle 50% ACT Range
Ohio State 27-31 IU 24-30
Middle 50% SAT Range
Ohio State 1170-1390 IU 1060-1290
Percent Scoring 30+ on ACT Composite
Ohio State 44% IU 28%
Percent Scoring Below 24 on ACT Composite
Ohio State 6% IU 17.6%
Percent in top 10%of HS Class
Ohio State 62% IU 34.5%
Percent in top Quarter of HS Class
Ohio State 95% IU 70%
IU does ok near the top of the class, but there's a fundamental gap near the bottom to the point that I'd estimate a fifth of IU's freshman class would be an easy, quick reject had they applied to Ohio State and another 10% would probably be on the bubble. In contrast, pretty much every single freshman accepted to Ohio State would get into IU.
https://www.iu.edu/~uirr/reports/compliance/cds/2013/IUBLA/C
http://oaa.osu.edu/irp/publisher_surveys/IRP_2016_Survey_Main.pdf
As for the medical school research, you're assuming that your competitors are all standing still. You assume that they are also not making significant investments and raising funds to grow and improve. That's not the case for either IU or Ohio State.
Now do you really want me to link those rankings from USN&WR to the London Times Higher Education Supplement to the Center for Measuring University Performance? It's not pretty.
Not surprising that you ignored my points and went to cherry pick your own. Everything I posted was from USNWR. All are current and I Could have gone a lot further with IU advantages. Face it, Ohio is a good school, just as good as IU, and like all BIG schools with the exception of one that has work to do.
That said, if your own insecurities dictate; you can be king for the day.