How is the a-A-4B 8.7 for this guy on youtube but 9.3 for me ?

https://www.youtube.com/watch?v=M3FvjBAdlRM

At 27:04 you can see his lineup and the a-4b is 8.7 and the FJ-4b is 9.0 and the same is shown at 37 min just before he spawns his plane (the br shown is 8.7 and 9.0)

am i missing something ? because mines are at 9.3 (getting shredded by all the missiles from planes and spaa)