I guess this is where weapon racks come in.
You went LT? Get some zooks.
You went cap? Get some BARs.
Was working till last patch, today going captain first is kind of suicidal without airborn to drop you a HMG. At the same time, Pz4 have become extremely potent vs infantry and zook are not mean to counter mediums anymore.
There is a number of reasons why Pz4 hit the field first,
1- because USF LV have been overnerfed to the point their fuel investment doesn't worth it.
2- Zook have become ineffective vs Pz4 unless you massively equip them, to not say to blobb them.
3- It is probably a mix of a lot of changes done on the last patch but Ostheer can easily rely on heavy T1 build, skipping T2 and still have a lot of map presence even if you have a M20 or M15 on the field. It is also map dependent.
I'll say the underlying issue of USF today is this faction has been designed around design strength and weaknesses. Little by little all his strength have been nerfed to be on par with other factions (you know the standardization stuff) but without compensating their weaknesses. And even when they did it it came with another nerf behind (giving Mortar to counter HMGs and then removing smoke on RM).
Looking at how the modding team is standardizing all factions (for good or bad), I can't see how they will be able to keep USF balanced without making HMG and Atgun available at the same time from a unique tier.
I mean, if they keep it that way, T1 need to be superior in AI function to other factions and T2 superior in AT function to other factions because their is a natural balance between having superior AI but inferior AT and versa.
If they change it and leave USF T1 AI not better than any other, then you make it equal to Oshteer or OKW, then you give it an Atgun accessible the same way they both do.