Just done a rough calculation on the amount of premium seats each airline offers, albeit with some caveats:

- Based purely on aircraft with longhaul seat configurations (i.e. for BA that includes First, Club World, and both World Traveller Cabins etc)

- I've counted F/J/W as Premium cabins (can redo calculations if some people want to only include F and J))

- I've a much better understanding of the intricacies of the BA fleet than LH, therefore for BA I've included all the sub-varients and for LH I've taken their numbers from their website. (This should introduce a small margin of error, I admit)

- This is purely by installed seat numbers, rather than seats sold per day (which would take much longer to calculate, and would nearly be impossible based on variations in scheduling, average route distances, load factors etc).

Results:

- BA beats LH by a mile in both gross premium seat numbers and by the percentage of premium seats within their aircraft.

- Within its longhaul fleet, 36.6% of BA's seats are Premium, while LH allocates 27.3% of its longhaul seats to premium cabins

- BA has a gross total of 13,977 longhaul premium seats installed on its active aircraft, where LH has 9,076.

The results:

https://www.dropbox.com/s/q1sotkp8ir1chsa/BAvsLHPremium.xlsx?dl=0Let me know if you see any gross inaccuracies (or if you can help me with more specific LH calculations, but on a rough first glance, I think Mr. Spohr is talking off the top of his head. There may be another airline that does more premium seats than BA (I just can't think of any).