Yeah but our ships have significantly more of those on board than their USN/ PLAN counterparts. Take for example, the latest PLAN DDGs like Type 055 and 052D. Now, each of those comes with one very impressive eleven barreled monster of a Gatling gun but they have got only one, facing the front, thus leaving the rear section without any cover (I know, I know, they have got their HQ-10s for that).
This set up is also quite deficient in handling a multi directional saturation attack, especially if the incoming threats happen to be of supersonic nature.
Meanwhile, each IN vessel comes with at least 2 or even 4 such guns. Plus, some of them have got the Barak-1 for close quarter defense.