I have only ever flown F on BA on a 744.
I am flying on a 773 to NRT on BA in F shortly, but I cannot see much information between F on a 772 and F on a 773. I see that seatguru has the seat on a 773 being pitch: 85 and width 32. On the 772 it is 78 and 21 respectively.
Is it simply just NF against OF or is the 773 F product being that much different. If it is different, what are the other improvements?