That list isn't correct, Manning. The list you posted were the largest party schools as rated by the PR, which is inherently flawed in its "formula." The list for campuses with a "Major Frat(ernity) & Sorority Scene" is as follows: DePauw U, W&L, Birmingham-Southern, Wofford, Elon, Sewanee, Bucknell, Wasbash, SMU & TCU. U-IL polled at 12; Dartmouth at 13; Vandy at 15; Mississippi at 17. Six out of the top ten are in the South.
That being said, as someone who has been to both Northern & Southern schools with fellow Greek friends, the North does not hold a candle to Southern Greek life. They are two completely different animals. Thus it's like comparing apples & oranges. There are pros & cons to both systems, but I'll take a Southern school steeped in Greek life over a Northern one... any weekend and/or party night.