Wally,
I have a counter question for you. Why should you believe people who are sure that diet doesn't work for them while you have no indication that they even tried the diet for any period of time or have notion how the diet should be done? And if they tried how many had one starch free meal and notice no difference in pain and draw conclusions? Personally I opt for a different approach. I only believe people who say this if they visited this forum and if diet doesn't work for them if they have searched for the reason why it doesn't work. For instance by posting here what they have eaten and have counselled here what could be going wrong. If they should do that they could belong to the second subgroup you started this thread with but I'm pretty sure this group would be dramatically smaller then the amount of so called non responders in your exercise group.
Anyway it is more logical to look in that direction then to assume that there is a difference between the AS patients in England from twenty years ago and the patients in Australia nowadays. Geez, your head must be spinning indeed

.
Gerard
"That we become twice as old now as a century ago is the work of plumbers, not doctors" -Midas Dekkers-