Don't Obers' IR MP44 only provide 2x weapons? At current 60 munitions cost that's just 30 munitions, compared to Stormtroopers' 4x MP44x at 100. That makes the latter's cost (plus ability unlock) actually cheaper, albeit at a measly 5 munitions since 25 munitions per weapon for Stormtroopers.
IMO Storms should ahve just gone for regular G43s and gain the tactical advance ability straight on, whereas the MP44s is the Infrared one.
True, and the Storms' will give them superior DPS at the desired range, but there are caveats to that:
1) More DPS is in each squad member for Storms than the StG Obers, the first two losses will absolutely destroy Storms' total DPS while it would barely dent the Obers.
2) Obers' StGs mostly ignore cover.
3) Obers' StGs are less penalized on the move (better burst duration by 0.125 and accuracy multiplier by 0.15).
So, Storms' has better potential DPS and Tactical Advance, while Obers' is cheaper, better on the move, more resilient to losses in combat, and mostly ignores cover. Thus, I think Obers' version is a little bit ahead by comparison and Storms' version could stand to be just a bit cheaper to make it feel equal.