Originally posted by Fenwoodian I doubt that Pentax in the near future will be able to match the AF performance of top Nikon equipment.
While I am a Pentax fanboy, this is true. Nikon simply has had more industrial experience developing and refining high end AF camera gear (lenses, AF systems, algorithms) at this point. Ditto Canon. It will take Ricoh some time and effort to match the experience acquired by Canikon. They are getting there though. The K-3 AF system, for example, has elements that match the best of high-end Canon or Nikon (-3 EV sensitivity, 86k metering sensor integration with AF, some of the AF-C options), but the whole Pentax AF package could certainly benefit from more evolution.
But perhaps led by the new FF, no doubt Ricoh will be doing their best to catch up in the next few years.