I am not necessarily talking about the Burke Class specifically. Just the general size of the ship……………The Japanese and South Koreans don’t have Aegis Crusiers. So, they don’t have the capability in there Aegis Destroyers????

At least for the Japanese destroyers, IIRC they don’t have the additional pair of projection screens for a group commander, which in turn means that the other parts of the group commander facilities would be lacking as well.