Weapon dmg realism 5.56 vs. 7.62

Xbox One

I’ve noticed that for some reason my AG5 which takes 5.56, does more damage than the AG4 which takes 7.62. This is not the case in reality as 7.62 is a bigger caliber round and would ultimately deal more damage than a 5.56 round.

Not sure if it’s meant to be like that because the rate of fire is higher on the AG5, which would lead to more damage in a shorter time vs. the rate of fire from the AG4.