According to Serealia, the G43s have significantly better moving DPS at any range.
8.8/5.3/3.8 at ranges 10/20/35 for the G43
6.1/3.2/1.1 at ranges 10/20/35 for the STG 44
The G43 also has significantly better long range DPS, at 200-400% of the STG 44, at ranges 30-35.
In real ingame scenarios this makes them a lot more versatile than the STG 44s, because they become good at all ranges rather than being forced to close in. And the extra moving DPS compensates for the lower close to mid range DPS when assaulting or chasing. Especially at vet 1 with -16% RA and on top of that the -10% RA from being near vehicles they can dominate any enemy infantry at long range at that time.
I have to revise some of my previous statements due to a calculation error affecting moving DPS. You're mostly right with your points, BUT:
Serealia is wrong by 0-25% (generally) depending on weapon and range. We need to keep that in mind for discussion and especially for - in your case - also balancing decisions.
The actual DPS is:
Standing
StG 12.3/7.4/1.4
G43 8.1/5.0/3.7
equivalency at 27-28 meters
Moving
StG 6.6/3.7/0.7
G43 7.1/4.6/3.4
Serealia exaggerates the difference quite a lot. G43s are indeed better on the move, but only by about 10% up to range 20, then they go up to 500% albeit at relatively low to okay DPS.
I have a couple of issues with your points though:
- At the very edge, the advantage is not worth as much because 1) the formation forces you to move an additional couple of meters in so that all models can shoot. This reduces the actual fighting distance by a couple of meters (which is significant when we only have ~5 meters of leeway). And 2) you need to look for cover. Moving away 5 meters gets you out of range so the squad is useless. You'd rather have to move in 5 meters to the closest sand bag.
- Ostheer already has a long range squad with Grens that have better DPS compared to G43 PGrens coincidentally from range 27 upwards as well with better DPS retention. So for static fights, an LMG Gren is way more effective in damage and cost.
I can see now that they might have a niche as chasers, but there are some oddities with the upgrade.
Units with good moving DPS should also have better close DPS (otherwise there is no real benefit of closing in). The mid-close range downgrade makes them a weird choice for assaulting positions.
The upgrade is combined with sprint which is not as valuable for G43s especially on PGrens. Yes, you can maybe cut into a retreat path. But having an ability that allows you to close in but disables weapons is a weird choice if the actual strengths of your upgrade is long range and moving combat
If I can bridge the first 5-10 meters (remember the speed boost at vet1 near vehicles that you mentioned), StGs are the better choice. I trade 10% moving DPS vs the ability to stand still and do between 30-50% more DPS anytime.
With the new numbers I can see where the G43 might find its niche on PGrens, but I don't think the case is very clear and it is overall a very odd upgrade.