CT's population is actually 3.6 million, but obviously the point that NJ is much more populated than CT is true.
Also, population is much less important than the # of TV homes. Which in this case gets a bit muddled, as NJ is split entirely between one half being in the NYC DMA and the other half being in the Philly DMA. There actually is no NJ DMA, from a TV standpoint. Meanwhile all of CT, save for Fairfield County, is part of the Hartford/New Haven DMA.
Interestingly though, here's a fun thought exercise to work through... You're someone working for the BTN and negotiating with major cable TV providers about bumping your network up to a tier that will net you a much higher subscriber fee... In which state, NJ or CT, would you expect to receive more resistance to your proposition, knowing about the fan avidity of each state university's athletic program?
In theory 8.6 million is greater than 3.6 million. In practice...?