No again,that is still inaccurate. First of all you are using the phrase "Tier 1" incorrectly. You are mistaking a designstion for broadcast rights to games with the networks themselves.
Secondly, these conference networks are not regional. They are offered at different levels of subscription packages. In your own example of DirectTV's Sports Pack, that package does not vary from region to region. You can get BTN anywhere, for example. The only diference would be whether ot's available in the basic package or a premium package. That's not "regional".