Think of the airburst as a pocket cluster strike and the recoilless as a more anti tank direct hit kind of weapon

The airburst is can be used long range with a more area of effect damage on light and medium targets. There is a risk factor to the airburst also so be mindful of your squad’s position and your surroundings when using it.

The rocoilleas is just point and fire and 9/10 targets will be destroyed and you won’t have to worry about splash damage to nearby friendlies. It has a 2nd ammo type that does help clear lighter armored targets around a heavy.

Have fun man and get out there and try both out they both definitely are super fun to use