Not only is the food in the BA F lounges below that of other airlines in their own "home" lounges (CX in HKG, EK in DXB etc), it seems to be significantly below that of airlines away from their home airports - eg I was extremely impressed with the food, service, drinks in the QR lounge in T4 and that's a J lounge (same for EK in T3 although I wasn't there for very long to compare as much).