that velocity increase of 100 makes them more likely to hit but they cost twice the energy so missing can hurt you more
mortars are more friendly to your core, you can shoot them all day,
so it hurts you less if you miss
and heavy mortars are higher risk, but bigger reward if you manage to land them,but at max range its not that big of an advantage,up close (under 3.5k) if cerbs are involved you are more likely to lose if you fire that mortar and waste potential cerb energy