If this theory is accurate, then these statues would match the description of the statues created by Unkei's four sons under his lead (Jikoku-ten by Tankei, Zocho-ten by Koun, Komoku-ten by Koben, and Tamon-ten by Kosho).
とすれば、運慶指揮下に運慶子息4人が分担して（持国天－湛慶、増長天－康運、広目天－康弁、多聞天－康勝）制作した像に該当することになる。