Well that statement implies that you think you know what your talking about so why don't you explain your theory behind those "stats"
The answer is simple , the sampling methodology is obviously flawed. There is no logical reason why the regeneration rate in 2G should decrease with a decreasing herd, just as there is no logical reason to explain a 25% decrease in regeneration in 2A or why 5C has the worst regeneration in the state when the deer have unlimited food supplies, a very long growing season and very mild winters with limited snow cover.