Jack
I take your point regarding the chances of BA pilots EVER going on strike. All I would say is this:
The difference between the issues of GSS (or scope if you like) and the issue of pensions for new joiners, is only this:
Selfishness.
'Scope' type issues have a direct, personal, and immediate effect on many of those being asked to vote. Pensions for new joiners do not.
It is also my impression that there is an increase in militancy amongst BA pilots at the moment.
As for Atlas, I presume that is viewed as being more akin to a wet lease. After all, THEY do have customers other than BAWC!!
Incidentally, and FWIW, I voted to strike for the pensions of new joiners. I thought it was the right thing to do, but I also suspect it will prove to have been short sighted not to!