PARS 3 LR is the first fire and forget helicopter launched missile added to the game and it would make sense to be nerfed on release to make it balanced against other helicopters and their missiles but now that many more fire and forget helicopter launched missiles are added, the German EC-665 Tiger UHT is in a disadvantage compared to them in all aspects (the helicopter itself lacking a chin mounted cannon and DIRCM, only having 8 missiles which is very inconsistent and often times require more than 2 missiles to kill a vehicle and having the lowest range of all helicopter launched fire and forget missiles in game).
And this well deserved buff isn’t just backed up by balancing reasons, there are documents that state the missile’s ability to hit the target accurately, unlike its performance in game that sometimes 1 or more missiles miss the target and are very easy to lose the lock on target.
This follows the successful completion of the system’s validation programme for the German customer, an event marked by a direct hit against an intended target during a test firing carried out at the Meppen test range (located in Lower Saxony, NW Germany) on 20 September 2012. The target was provided by a tank moving in between houses. In the final firing, the PARS 3 LR missile struck the target with exceptional precision in a demanding urban combat scenario at a range of approximately 3 km. All test firings were carried out from a German Tiger helicopter.
source: Press-release-2012-10-09-EN.pdf
The article above indicates the existence of a system similar to IOG that followed the tank as it moved between houses and didn’t just lose lock and explode mid air due to the loss of lock.
In another test the accuracy of the missile was also stated:
In April 2011, a successful test campaign was carried out by MBDA Deutschland using PARS 3 LR missiles equipped with warheads launched from a German Army Tiger helicopter at the Vidsel test range in Sweden. All guided missiles hit their targets at the optimum point of impact.
source: pars-3-lr_background-1402662508.pdf
The missile should also be jamming resistant and have adjustable trajectory as stated in official documents:
Weapon System
• Fire-and-forget missile system, ensuring high crew and platform survivability
• Entirely passive infrared system
• Salvo-firing capability (up to 4 missiles within less than 10 seconds)
• High jamming resistance
• Selectable missile trajectories (direct or top-attack)
• Lock-on-before-launch
• Multiple target tracking
sources: PARS-3.pdf and pars3_lr_ds.pdf
But PARS 3 LR is still missing a top attack trajectory and IRCCM in game.
Overall PARS 3 LR should be functioning similar to LMUR, a top attack trajectory with IOG and IRCCM that also hits dead center and doesn’t randomly miss the target and only then it would deserve 12.3.