Yes, it will be all a matter of execution. And as this is supposed to be used either against the Russians or against the Chinese it will all depend on how the Americans' execution will compare to that of the Russians and/or of the Chinese.

Can't speak about the Chinese, but because of this war in Ukraine the Russians definitely have a very big head-start when it comes to the execution of anything artillery-related, as in I don't think the Americans have had to fight a real counter-artillery fire since at least the Battle of Hue. Maybe the Ukrainians (also pretty experienced by now) will teach them, if they (meaning the Americans) will be open to learn.