That's one of the worst videos ever, I'm sorry. I can't have a legit discussion on this topic when that video is involved!!
As for my dog, I'm fairly certain he will "protect" me (if protect = bite). We've tested this more than once, double blind meaning *I* had no clue an attack on me was coming and had no way to unintentionally cue my dog.
Liesje & the K9s
Nikon (GSD) U-CH SG Alta-Tollhaus Bono SchH1 KKL T1 FO PA TF-III FDCh-S CL1-R UJJ U-CA HIT TT CGC
Coke (All-American) VPC's Coca-Cola CGC, couch warmer extraordinaire
Indy (All-American) Blue Horizon's Indigo Girl, flyball star in training
Rainbow Bridge Kenya (GSD) U-CH Alta-Tollhaus-Krieger Lamb Chop CL1-R CL1-F RA HIT TDI TT CGC
vom Blauen Horizont / Blue Horizon GSDs