Let's consider this, the USF doesn't have any other heavy hitters in the anti-tank department. There is the M1 57mm, but it is slightly better than the Raketenwerfer in terms of range and rate of fire. However, it lacks enough punch for anything higher than a Panzer IV. The M10 also a unit which doesn't fit that category.
People have other mention that the USF doesn't have any recon options other than the Major's ability. The player could go through Recon Company, but everyone here knows that commander is meh at the moment.
The Jackson is the only tank destroyer in the USF arsenal which can threaten tanks like the Panther, the King Tiger, and the Tiger. Yes, it can go lone wolf with its sight, but it is also vulnerable thanks to its paper armor. I almost forgot to mention that it useless against infantry.
Putting certain nerfs might hurt the USFs late-game since Shermans are good at anti-infantry and decent at fighting tanks.
I mean, its not like its
OKW counterpart.