Ah yes, make the most expensive tanks in the game in order to beat a blob of basic rifleman. Seems like your admitting that you need to put way more effort into beating the blob than the player does TO blob.
Same thing can be said about KT, Obers and Panthers, we call this combined arms approach. USF blobs are not difficult to deal with unless you are a complete novice with the army you are using. Last time I checked, MG-42 and Mortars do really well against blobs, and yes you cant expect 1 MG-42 to do its job against 3+ Rifles, see I can theory craft too.
Goliath will be fun, while we are at it lets add Anti Tank Dogs for Stalin's army.