Then you conceed my point and indeed the point of Crafty rating chess
players.

OK, now if I used Crafty for analysis of Fritz or Rybka games, it would
certainly not agree and would often call their moves 'errors' even though
they are FAR stronger than crafty.

To properly analyze the world champions
you would need to use a program that is atleast equal in strength to
these champions. Crippled Crafty just doesn't cut it... now if they
used Rybka for analysis I wouldn't have any problem
with the study.

J.Lohner