I think drachillix is referencing that the US implemented it faster and better than the Japanese and so gained a tactical advantage in both detection and firing solutions for naval ships that were otherwise comparable.
According the OP’s guidelines, it seems appropriate for this thread.
cite: The book Last Stand of the Tin Can Sailors, published in 2005, about the battle of Samar. Read it two months ago and it stated the use of radar for firing solutions was a definite boon in that the US ships had it and the Japanese ships didn’t.
EDIT: That may not be what drachillix was referencing specifically since I can’t read his/her mind, but I think it’s still on-topic.