Tim,
As a pilot, I'm still a little confused as to the "millions of dollars" of benefits we have that others don't - unless you're talking about retirement (or what's left) and that would depend on which other employee group you're talking about. I certainly hope I'm not paying less for medical, etc.
In some ways, our benefits are less than other groups, though I'll agree maybe not in dollar terms. An example of that would be vacation - each day of vacation pays less than a day of work - for most employees it is the same. However, since my hourly pay rate is higher, that day of vacation pays more dollars than most other employees.
I will give you this - over on the ALPA board there are some expressing the sentiment you speak of, the "Not one dime unless every other group gives". There are also some that have a single group in mind - you folks in the IAM are the favority targets there. Whether they represent the majority or not, I don't know. I do know that if I were in another group, I would expect my representatives to negotiate the best deal possible irregardless of what ALPA said or did.
My personal feelings have been expressed before. If any group gives proportionly less (considering income levels, etc) good for them - they had better negotiators than I did.
Jim