It would be intersting to see hard number statistics on bear defense. Most of this is percentages, "most of the times" and vague generalities. That kind of vague information suspect as usually is linked to an agenda.
Here's a fairly hard factual list of fatal bear attacks in NA, broken down by date, place, species, and a short description. Unfortunately not much info about defense attempted.
The mapper does show the AT region getting it's share of action.
No shortage of summertime attacks either.
http://en.wikipedia.org/wiki/List_of_fatal_bear_attacks_in_North_America
