To be fair, Emirates is carrying passengers to Dubai and beyond whilst BA's aircraft by-and-large serves Dubai and the nearby emirates alone.

BA has 625 seats per day each way ("PDEW") to Dubai in the summer and 905 PDEW in the winter. Then there are 280 a day to Kuwait, another 280 to Bahrain and Doha and a further 280 to Abu Dhabi and Muscat. Saudi Arabia has 280 PDEW to Jeddah and 252 PDEW to Riyadh. That makes 1,997 seats to the Gulf every day in summer and 2,277 in winter.

If we allocate approximately one third of Emirates' capacity to Dubai and another fifth to the Gulf then that gives between 1,300 and 1,400 origin-destination seats and a further 800 London-Gulf seats.

Which makes Emirates' total Gulf capacity ex-UK 2,100 to 2,200 seats PDEW, only 10% more than BA's summer capacity and approximately the same as BA's winter capacity.

Very true, so many pax that once would use BA in the winter from their Cheshire homes to the sunny wine estates of Stellenbosh et al skip the APD and shuttle to LHR and use T1 at MAN instead via DXB. Difference in arrival times is often circa 2-3 hours, which given 747 tech delays, is the difference of a photo finish. By a nose you might say ;)

You'd pay the same APD via DXB or via LHR (or indeed via AMS, FRA, DOH or anywhere else.

Apd is a pittance compared with the cost of a business class flight too - 5% maximum.

If EK did premium economy there's a good chance is fly with them 75% of the time