Rutgers. No school, that the Big Ten is thinking of offering, has more TVs within a 100 mile radius than Rutgers. For that matter, I don't think that there is a team in the country that has more television sets within a 100 mile radius!
It's all about the Big Ten network and $. The other reasons are a distance 2nd, 3rd, etc...
They could kickoff the introduction of Rutgers, with Iowa vs. Rutgers @ Yankee stadium(there has been talk of Iowa playing in Manhattan already, they might as well as make it an official event). New York would know the Big Ten is in town when the Hawkeye fanbase shows up. They might not like it, but they won't soon forget!