Soviets always win, but why?

Hi just a general discussion really just wondering what your thoughts are on the soviets winning on the vanilla servers 90% of the time, I find although less stopping power, the m16 variants to be a lot easier to handle than the ak, my us load out tends to be cheaper than my soviet loadout, part of me thinks that it's rpg vs law that's making the difference, but I do find nearly every match the Americans have a ridiculous amount of helicopters compared to the Russians, which you think would aid them getting troops to the front lines without using so many resources from the front bases or is it simply the type of players that pick US, what are your thoughts on this? And how could it be balanced so it's 5050.

Edit for a summary: I think really a lot of common things that come up is the size of us load outs that people take and that the us is noob friendly, that big backpack in the us side i think is causing people to way overstock. playing last night I was really just recon and trying to cause disruption at the second american base from the front line, I was alive for 3 hours whilst doing this, I killed at least 30 us soldiers of which at least 12 of them had the big backpack on, in these back packs most of them had at least 10 m16 magazines (plus the 5 on the clothing) if they had the sniper then they also had 10+ magazines of that which is an insane amount of extra ammunition to be carrying, nearly every one of them had 20gl ammo its never going to be used and is a huge waste of resources, most had 10 bandages which quite frankly is ridiculous, in my personal opinion I think 4 bandages is enough with 2 saline packs 4 morphine and a couple of tourniquets if things get desperate, I think we've moved on far enough now that the amount of brand new players is outweighed by people that should know what they are doing. my advice really to anybody that picks us and wondering why they are losing is to stick with 6 mags on your m16 and if you use the sniper then just take 4 for it, you shouldn't be needing that many rounds, I agree the Russian transport truck is better than the us but I feel like the advantages of the huey vs the ah easily makes up for the poor transport trucks (in all honesty I'd much rather use one of the Russian jeeps to get anywhere on the map than a lift in the Russian chopper). Another thing I notice playing the way I was last night was that at the second bases back from the front line (the highest traffic points) they were pretty much unmanned which is unheard of on the Russian side, regularly me and 4 or 5 other people will stay back and defend that base whilst the rest push, this lack of resources due to huge loadouts is probably a key factor for this, also place a living quarters down as one of the first things you build at a base, it reduces cost of respawn. Thanks for the discussion guys hope some of the us players see the above and take some advice, I really want this to be closer, it's much more enjoyable if there is a close fight.