Honest answer: it depends. The B version for the Navy might be 7.5 limited due to the wing fold mechanism. The wing fold mechanism, in addition to the Navy's need for the jet to be able to fly slower at the carrier for landings gives it a bigger wing and horizontal stab than the A and C versions. This will probably give it better alpha (AOA) control and pitch authority. If it can gain those two things while giving up a 1.5 G then it should be a big deal. F/A-18s are 7.5G limited and F-15s and 16s are 9G limited. All are very good jets and it will be the pilot at the controls that determines the winner of a fight, not the 1.5G difference in peak capability. It can effect the style of fighting a jet chooses, just like thrust available and AOA and pitch authority do.

Average resting G tolerance is around 5.0 if I remember correctly from my last centrifuge trip. I'm on the below average side with a resting G of just over 4. Despite my low resting G tolerance I still had to pass the 9G centrifuge ride to fly F-16s and I did. I just have to work harder than a guy who has a resting G tolerance of 6.5.