You are clever to avoid something bad , but make no sense to draw the conclusion of USF is balanced. You can have all the tools you need as OKW without picking a commander but USF is simply a crippled faction if you don't pick a decent commander having other kind of infantries ,mobile rocket artillery or heavies.
You are being laughably biased. You are just cherry picking units to give a wrong impression. I'm not denying the USF lacks certain tools, they do. But OKW does lack some tools as well.
For example:
OKW lacks a proper 60 range reliable ATG. Rakettens are shite to use and the stealth creep cheese is their only saving grace (but they still suck for the job you really get them for).
OKW lacks a proper late game AI vehicle. The P4 is not reliable enough.
OKW lacks proper anti-tank infantry. The single schreck on the expensive Sturmpioneers is pretty garbage, and you need those units available for repairs anyway.