Interestingly enough, as noted in a piece in the Las Angeles Times, Feb 28, 2016, Does Owning a Gun Make You Safer?, having the opportunity to defend yourself with a gun is a rarity, occurring around one percent of the time (127/14,145 incidences). The most noteworthy use of guns wasn't in personal safety, but in the protection of property, where those possessing firearms found a favorable outcome 62% of the time as opposed to 56% by those without them.
The first thing to remember here is you are citing a left wing rag from a left wing state that does not allow it's citizens to carry a weapon so, their claim that "being able to defend yourself with a gun is rarity" is absolutely true but, the stats from states that do allow the citizenry to arm themselves as opposed to those that don't still stand as proof that an armed citizenry is safer.