Use the pricing models then. Allied get something like 50% boost in points.
I believe the pricing is ok. Hetzers are good little tanks for TD roles. Dont expect them to be worth much in killing INF. I suggest using Allied tanks to kill German infantry. Dont expect them to be killing German AFVs. If you need a mobile tank killing machine use the TDs. I believe the M10, M36, Wolverine are all around 120 points and can kill most of the uber German tanks.
IMO this is where the pricing comes into play. Use the tanks for their correct role and you will do quite well.
-LW