GV kills are only scored in, regards to rank, if you are in 'attack' mode. They are not counted, in regards to rank, in 'Bomber' or 'Fighter' mode
Even if you kill aircraft in a bomber those kills are not factored into your 'bomber' or 'overall' rank even though those kills are recorded.
Bombers are for bombing not killing vehicles or planes.
These are the only factor that are used to determin 'bomber' rank:
Ground Categories
* Damage per Death = TotalDamage / ((Discos * 0.5) + Bails + Captures + Deaths + 1)
* Damage per Sortie = TotalDamage / TotalTourSorties
* Bombing percentage = (TotalTourBomb**** + TotalTourRocket**** + TotalTourTorpedo****) /
(TotalTourBombsUsed + TotalTourRocketsUsed + TotalTourTorpedosUsed)
* Ground points = (DamagePointsScoredOnObjectsTh isSortie * DeathMult) +
TotalTourDamagePointsScoredOn Objects +
DestroyedPointsScoredOnObject sThisSortie * DeathMult) + TotalTourDestroyedPointsScore dOnObjects
* Field captures = FieldCapturesThisSortie + TotalTourFieldCaptures
See the first column second row:
The 'game kills' you refer to will include those kills but they have nothing to with 'rank'. The page you linked to is 'rank scoring'.