The math doesn't math.
The highest rated Big Ten title game was in 2013 when MSU-OSU played. It drew 13.9 million viewers.
The Christmas game that Netflix paid $70 million per game for? It drew just over 30 million viewers last year.
I would be shocked if anyone touched this at $70 million. NBC is taking a big hit on their regular season games and put this out at a big number hoping to get a bite.