They are harder and penetrate armour better. So yes they will provide an advantage.

The sooner Russian occupiers are no longer murdering Ukrainians and dropping mines over every square meter of land, the less harm comes to Ukrainians.

No individual measure aside from troops on the ground or nukes is going to change the course of the war by itself.

The ammunition is very effective at punching through the armor. But the Ukrainians will be fucked when in 5 years Leukemia in children is skyrocketing