PC767, I understood K's posting. TAFB=Time away from base. A term familiar to most pilots, it appears on every trip description - not sure why you as crew have never heard of it.
The quotation I used above didn't give the 45% figure, but I think you'll find that that is the case with Lufty vs BA crew.
BA management accept that we are paid market rate, this was confirmed by the chief financial officer at a meeting with pilots and BALPA at Waterside yesterday.