This doesn't make sense to me. I'm going on the definition of retro pay being the difference between old pay rate and new, multiplied by hours worked since amenable date. ( I know there are other factors such as vacation, etc) If a senior 777 captain gets a raise of, let's say, 30$/ hour, then retro is calculated back over the time he has flown since the amenable date. Now take a junior FO on the 737 who also gets about a 30$/hour raise, and calculate his/her retro back since amenable date. ThE FO will have flown many more hours than the 777 captain given the mission of the equipment therefore compounding his retro further to a higher number. In other words, Captains would get more retro than FO's if their raise is a higher number for that BES. Where am I going wrong on this logic since the captain retro numbers always seem rumored as much bigger than fo numbers.