I was looking at the war thunder wiki page for the F/A-18C and couldnt help but notice that it had many issues
For example it mentioned the wingspan is 11.5m, this isnt exactly accurate as to real life. In real life the F/A18C has a wingspan of 37 feet 6 inches (11.43m) without missiles and 40 feet 5 inches (12.32m) with missiles. This means that while being stated as an 11.5m wingspan, 11.4m would seem more accurate.
Another major issue is the gross weight, being marked as 19.3t (42549 pounds), this is EXTREMELY inaccurate. Its real gross weight is 24000-25000 pounds, this is a major difference that should definitely be changed.
It also mentions the maximum speed for flaps is 463kmh which is wrong. The real maximum speed for flaps is mach 1 regardless of AOA.
It also mentions the maximum speed at 10668m (35000ft) as being 1840kmh. The real maximum operating speed at 35000ft is mach 2 or 2135kmh.
I will continue to help find more issues with the F18 but for now here are some general ideas.