One of the problems with CoH across multiple games is that they have this mechanic where one faction is supposed to get good starting (mainline) infantry that get upgraded weaponry later and the other gets two different tiers of infantry, and basic (mainline) infantry and an elite infantry. And that elite infantry will dominate the opponent's upgraded mainline infantry.
CoH2 pretty much did away with this when they made it to where 3 Gren sqauds were slaughtering any number of US Riflemen regardless of the much more expensive cost and upgrades for Riflemen.
CoH3 isn't there yet. One reason why Riflemen are used less is due to Rangers.
So umm, that late game elite infantry upgraded ISC rifles lose to, are they in the room with us right now?