Available 'g' is vital in a dogfight; that's why dedicated air-to-air fighters are designed to pull a lot of g. At the inception of F-16 and Typhoon designs the philosophy was that a dogfight would be the end result against a worthy adversary and that manoeuvre potential would ultimately decide the winner; 9g being an uncomfortable yet tolerable limit for sustained fighting.
The philosophy behind F-22 and F-35 is that if they get into a merge something has gone wrong. Both will kill enemy fighters without them knowing what's going on and you don't need 9g to fire a missile. If you did find yourself in a turning fight one would hope that even if the advanced sensors didn't allow you to merge with advantage, modern missile capability would put the fight in your favour.
I would bet that in 99.9% of engagements JSF doesn't pull 7+ g at all.