Awesome. 12.7 mm is actually whats needed to take care of this, you don't even need Anza which BTW is limited to 1 shot. The Indian army also has 12.7 mm guns sometimes on their helecopters and short range SAMs.There is no operational data or war capability is avaible for LCH on the other hand we have war proven mature SAMS and helos they need to first induct then shows the operational capabilities then brag, If we talking about Anza its war proves destroy atleat few enemy aircrafts in Kargill and JF 17 is operational used against Talibans.
Source: Indian LCH, new threat for Pakistan in Siachin and Kashmir? | Page 13
But that doesn't help the fact the Indians have for a long time shown interest in attack helicopters for high altitudes. Weather its usefull at Sachien altitudes is another question but something like this during Kargil would have helped them immensely. Pakistan doesn't have an equivalent. Cobras are one thing, but they can not perform like the LCH, the Chinese may have something similar but perhaps lacking in flight ceiling. This LCH could be used on the Indo-Tibetan border and its threat for the PLA though probably not as much as it is for the PA
Point being they have a helicopter that will eventually be in service in rather large numbers would mean they have a better advantage on the battlefield.
Is a gamechanger? No
But it is one of those weapons that is very useful in low intensity conflicts and very affective against armour and worth alteast a mention in Pakistani army circles.