Did you guys even read the article. The helmet did NOT stop the bullet. The bullet merely went through the helmet without hitting him, it "grazed" the helmet, penetrating the shell.
"...bullet penetrated the outer lining of the helmet but did not actually hit the victim..."
That being said, a bullet, even from a 22, will ALWAYS ALWAYS ALWAYS go through ANY bike helmet. The guy simply missed.
On another note, I experienced some roag rage vs bike the other day. My friend and I were riding our bikes home from the gettin' place, down a commercial block. (On commercial roads, its ILLEGAL to do anything but walk in a sideWALK) We were on bike, going with the flow of traffic. Some girl started honking and screaming at us, to "GET OUT OF THE F'IN ROAD, GET ON THE SIDEWALK" like we were a huge inconvenience. I turned around and not-too-politely hollered back "Its illegal, handle it!."
A block or two later, she zooms by, and sprays a jet of MACE at us, as we were biking under a freeway bridge, with cars whizzing by going 30!! Luckily she did not hit us, and I got her plate number and filed an assault report. Hope that moron got some jailtime.