If you don't know what you're doing you'll get stomped when you're playing soviets.
Same with EVERY other Faction
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Personally i think Soviets are a (little) bit smarter to play.
Maybe its why you have Cons (a little bit simmilar to Rifle; can throw Grenades, have AT and so on)
And i agree with 132 :
When Playing Soviets you know which Building includes what Unit (simmilar to US).
For Example the Ostheer T3 has Inf; Tanks AT and Support Weapon (HT) While the Soviets have a Tank Hall , one Infantry Tent and one support Weapon Tent (almost like US)