I think it's slightly weaker than the HGauss, but has appreciable damage at range unlike the regualr HGauss. Basically the damage drop off isn't as extreme last I researched.
Not quite, the fluff IHG have no damage dropoff at all, but the damage is a little lower than normal HG and the max range is a teensy bit lower.
(IHG 22 Damage at all ranges, HG 25/20/15 at Short/Medium/Long)
The IHG is also 2 Tons heavier and more expensive.
But this
However, this all depends on how it's been materialized in MWLL. It could work completely different.
is quite right

Btw, with the Blasp Prime and E mounting HMLs, I hope those have been buffed a bit...
And the Faf D looks like a deathtrap with only 4 DHS, unless UAC20 heat has been reduced (or the pilot doesn't fire the lasers at all).