HUH ??.2 different but similar incidents with 2 different outcomes. There was no definitive reason why the Glock wouldn't fire
Those who know will remember when a guy stopped a charging grizzly dead with his revolver:
Charging Bear Killed in Alaska
The closest you will get in a normal pistol to revolver power is 10 mm so here is the story about the guy whose 10 mm Glock failed him and his buddy when a charging grizzly killed one of them:
10mm Glock 'fully functional' in fatal grizzly attack - WyoFile
You state the Glock was a fail !.
But having read,and reread that article it appears that the man did not know how to LOAD IT !!!.
And as I see it an empty gun is not a fail.
I own and shoot 10 Glocks [ among dozens of other brands ] and not one has had a fail !.
The only fail I had was the 3 .45's and yes 2 are Glocks,one is a 1911 Kimber = all due to ammo failure.
So your post is DISinformation.