Compare USF and Ostheer you will find that their support weapons are about equal and their infatry is better. So is their light vehicles.
Should they grenadier get a big buff? probably not but there is large number units that need to nerfed.
If you take a really close look, you'll notice that USF infantry and lights are also more expensive and according to the ancient scripture you've refereed to yesterday, its exactly how its supposed to be.
And no, there is no "large number of units that need to be nerfed", that theory was proven to be completely ineffective in last 4 years.
Its the small number of units that require a little bit of love, in ost case, ostwind, PGs and arguably stug.