Indiana is definitely the best team in the country by far. They deserve all the the praise they get and I expect them to steam roll Miami as well.
The Sec definitely has some overrated teams for sure. So some of the praise that some of their teams get is unwarranted. If the Big 10 can win 3 National championships in a row that's certainly an impressive feat. But the Big 10 also has their share of overated teams as well. And then you got teams like Texas Tech who are also super overrated because they play in a horsefeathers conference and beat up on scrub teams all season long.
There are only like 2 and a half major conferences out there so arguing over which one is overrated and underrated is kinda silly in the grand scheme of things.