This. 1v1 is currently pretty imbalanced, it just shows more in 4v4.
4v4 and 1v1 will never both be perfectly balanced because when several players work together there will be certain strong unit and ability combinations that cannot be replicated in 1v1. One example is the cloak ketten with sniper in vcoh. Another is multiple KTs in CoH2. Its extremely difficult to nerf a combination of units without making them really underperform in 1v1. But if you try to balance one unit against another that can be done without screwing the team games. USF is weak in 1v1 therefore they are very weak in team games. Make them balanced in 1v1 and they will also become more balanced in team games. The fact that its really easy to prepare for both infantry and tanks in team games makes "shock" units less powerful, but its not like balancing 1v1 and 4v4 are polar opposites.
tl;dr 4v4 will never be perfect in CoH2 but it is possible to make balance changes that will improve both 1v1 4v4 and everything in between.
hate to toot my own horn, but the 4v4 maps need to be improved as well. In short, they are way too clustered in some spots because crucial points are all very close to one another. This basically forces all players into a fairly small area where Axis strength prevails.