HI! If you actually read the thread thus far, you would see that weapon upgrades were discussed! Including multiple ways to restrict them!
What's more is that um.... Falls don't require ANY weapon upgrades and also start with camo. This allows them to be high impact units, granted, harder to use. You can get a lot more out of falls if you have what it takes.
Additionally falls are clearly specialist infantry, but by nature no usf squad is due to weapon racks, so they are directly competing with rifles, where falls are competing with Obers.
Apples and oranges. Only thing similar is that they both fall from a tree (which is funny cause paratroopers Amma right?)
The weapon upgrades themselves are only half the problem. Paratroopers are still an incredibly potent unit that will easily demolish Grens, in particular since they're unlikely to have weapon upgrades at that point. Heck, they'll be potent enough to wipe MG42s as well, in particular since they don't require unlocked grenades.
I'm also not sure the Falls comparison is that spot on. If you've ever been on the receiving end of a Paratrooper LMG blob, you know what I mean. Yes, Falls can do likewise to an extend, but at least they're utter glass cannons, especially because they're 4 man squads. You'll always wipe a Falls much easier than a Paratrooper squad.
That said, don't get distracted by Falls. I said this in other threads, but balancing Allied factions towards OKW is an absolute disaster move that has left Ost in its worst state ever (until the last patch, and even in the last tournament most players opted for OKW).
Was playing 1v1s at the time, and only posting between matches, that's why I had no time to respond to your post until now