BA may be better than some of the competition (I have never tried AF so cannot comment there), but they are not twice as good as LH. Much depends on how you actually rate the J seat, if we are talking a 777 service or 747 main deck, I would actually prefer to travel with LH and pay a premium to do so (for new LH Business Class). There is very little to differentiate BA from the competition in terms of service and I prefer the food etc. with LH (I am less keen on the lounges but that is a different story). Other aspects of the LH service produce clear benefits over BA, onboard internet and AVOD to name just 2 elements.

With BA you essentially get a more pleasant lounge and a 180 degeee flat (but narrower and more uncomfortable) seat. I would not pay 100% more for that, I may (depending upon how many TP I need to renew BAEC Gold) pay 20-30% more.

I am curious though if some of the contributors here think that BA offers superior value over the competition, why then do they like me seem reluctant to fly BA point to point, preferring instead to route via EU cities to reduce the price differential