HQ-16 has a guidance limitation, its to do with the illuminators.
The same limitation applies to shitl etc.
With the 054A later batches, the Chinese replaced the illuminators.
The current ones can only guide 2 missiles per channel. There are 4 channels, each only covering a set 90 degree arc or whatever, so effectively, a 054a can only guide 8 missiles in one go, now, the catch here is, they can only be 4 per side because each illuminator can only guide 2 missiles.
Now, IN has ships equipped with 8 brahmos, in a swarm attach, a tughril is DEAD. Full stop- this also applies to their ships, but usually you're launching 2 missiles per target, you're out of missiles before the IN is out of missiles. You also cannot fully defend all sectors either, effectively these ships are of a bygone era and should have been left there, they're not suited to modern high intensity conflicts