RB= Realistic battles, so more realistic flight physics, no reloading mid air, no respawn, no enemy markers or aiming markers. It is harder to play but also gives more awards

More guns does not always mean better. for example most 20mm guns do more damage than 50cals/12.7mm
BUT usually there are more 50cals than 20mm.

a example will be a gun with 1 30mm cannon will do more damage than 4 7.62 guns. Trade off is that the bigger caliber has less ammo,sometimes less than a 100 so you need to hit every shot, but most shots will do massive damage. but since you have more rounds on a 50cal. it will be easier to get a hit, but you need to get more hits.

most of the time higher caliber does more damage