QR Fares
I priced a BHX/BKK return in business for May. Ex BHX the cheapest fare showing so far is the Business Saver. That comes to £2,967. The equivalent fare ex MAN is £2,970. However, MAN also has a Business Promo which works out at £1,905.
My experience is that QR releases Promo fares on a very regular basis and I suspect they just haven't got them loaded yet for BHX.
I know which J class I would prefer at the £2k level (hint - QR have one of the best J seats in the air in a 1-2-1 layout and EK have the horrible 2-3-2 shell seats).