I'm not an expert by any stretch, but i think you isolate the issue in your own post. Since there are so many "press fans" out there it would be silly for HD turnover numbers not to be significantly higher than in RL. If the Wisconsin, N. Iowa etc. teams you cited faced the press 15+ games per year their totals would be higher.
I think it's also worthwhile to note that 3 of the 5 teams you isolate play in the big 10, which is notorious for playing a slower, less press oriented style of play than the rest of the nation. I think the evidence you cite maybe makes the point that the press is the cause of the discrepancy, not the reason the difference needs to be corrected.