And this comparison of western and Russian ejection seat technology...
http://www.fas.org/man/dod-101/sys/ac/equip/eject.htm
Within the last 10 years, dramatic escapes from Russian fighter aircraft have captured the attention of military pilots and aviation enthusiasts around the world. The low-altitude ejection from a MiG-29 just prior to ground impact at the 1989 Paris Air Show and a pair of miraculous escapes from two exploding MiG-29s that had collided over Fairford, England, in 1993, vividly demonstrated the potential downside of flying high-performance, military aircraft. The pilots ejected successfully thanks to the K-36D ejection seat designed and built by the Zvezda Research, Development and Production Enterprise in Russia.
The K-36D ejection seat and its associated life support equipment are designed, tested, and produced under the direction of Professor Guy Severin. Professor Severin, a member of the prestigious Russian Academy of Science, has devoted his life to developing and perfecting life-support and life-saving equipment for air and space systems. His achievements include the design of the cosmonaut seats, pressure suits, and the first extravehicular maneuvering unit for the Russian space program; aeronautical fire suppression equipment; and escape systems for fighters, bombers, VTOL aircraft, acrobatic aircraft, and the Russian Buran space shuttle.
The K-36D ejection seat provides directional stability and crew protection features that significantly reduce the risk of injury during ejection, especially at the higher speeds associated with fighter aircraft operations in wartime. Successful K-36D operational ejections have occurred at speeds of 729 KEAS and Mach 2.6. The aerodynamic forces encountered at high speeds can cause severe neck, spine, and limb injuries. Our experience with Western ejection seats, which are aerodynamically unstable and have little or no limb restraint, indicates that the risk of major injury rises exponentially from about 350 KEAS to a high probability of fatal injury near the seat's structural limit, usually about 600 KEAS. The fact that the aerodynamic forces increase as the square of the velocity has made even incremental improvement of the performance envelope very difficult.