http://bicycleuniverse.info/transpo/almanac-safety.html
Some recent headlines about how NYPD handles car-and-bike collisions:
"Another Cyclist Killed at East Harlem Intersection, NYPD Again Blames Victim"
"Motorist Havoc: Two Dead, Five Hurt, Kids in Critical Condition, No Charges"
"Cleared in Traffic Court, Hit-and-Run Killer Still Employed at NYC DOT"
"Leroy Comrie Bill Would Force NYPD to Report to Council on Hit-and-Runs"
"Hynes: No Charges for Curb-Jumper Who Blew Red and Killed Pedestrian"
"NYPD: Pedestrian Killed Himself by Running Into Stopped Police Cruiser"
"Cyclist’s Brother Says NYPD Closed Investigation Into Unsolved Death"
"Immune From Prosecution, Curb-Jumping NYC Motorists Claim More Victims"
"Irvin Gitlitz, 83, Was First of Two Pedestrian Fatalities Wednesday" (which notes, "The truck involved in the crash that killed Irvin Gitlitz did not have required crossover mirrors. The driver was not summonsed," and for the second fatality, "No summonses were issued")
...and those headlines are just going back to April of this year. http://www.streetsblog.org/category/issues-campaigns/nypd-cr...
Your link does not say that drivers are ‘seldom cited’; it says that drivers are cited slightly over half the time. A priori, an even split in responsibility across all cases seems perfectly reasonable.