well, I've been at number 1 on 4v4 for USF for a while and despite the constant whining of players who say they have no late game, as annoying as it may sound to hear to some of you, you need to get jacksons and KEEP THEM ALIVE. not much stands up to a 3 jackson volley, and then you reverse them, and throw them back in, while you get off some AT nades with your rifles, throw smoke at AT guns and MG's with your rifles and use attack ground through the smoke with jacksons. KT's will go down pretty fast if you hit repeated volleys.. Also, the USF is mobile, aggressive and will only work if you play combined arms, like the tool tips suggest. You need to micro like a complete champ to win sometimes but that's the nature of the beast unfortunately. If you're not good at it then practice or stop playing them.
Relic, pls buff BAR
but not everyone can micromanage as good as you bear that in mind and that can be a problem for the majority who can't