Your decent soldiers and counter-snipers have to be better than the opposition's, though.
Doesn't help if they're evenly skilled.
And the attackers have to spawntrap the Resistance on their first spawn when the bot is right at it. There is no other way to get it through, because it passes both exits.
1st point: No, equal skill means your counter-snipers will nullify the effectiveness of their snipers - either by killing them while they're acting as snipers instead of counter-snipers, or by forcing them to play counter-sniper and ignore the targets they'd normally go for. Either possibility means their snipers aren't doing the job of killing the guys who are advancing.
2nd point: You don't have to spawn-trap them, they can be allowed to exit the spawn at the further exit from the bot, and retreat away from it, as long as you demolish anyone who doesn't fall back on the way out.
Theres 2 paths out of your spawn. Not much choices there to coordinate anything, if you get butchered right on the enterance. To get past youd need the entire team to attack at the same time, not 2 or 3.
Only replying to this, because bad teammates is a problem in ANY online game, and can screw you just as bad outside Brink.
You're missing the point of what I said. 2 or 3 players moving together will force the enemy to concentrate their fire - while they do that, another player who's either coordinateing with them, or just smart enough to see what's happening, can exit through the second route, and it will be less well-defended than usual. The players going through the same gate don't necessarily need to be coordinating with one another - they're just the distraction another player is using - and it's easy to coordinate solo actions with a group who are making a predictable move.
This ALWAYS happens, and lets you get ONE player (only one though) outside the spawn, and ready to cause some trouble. As a Light Operative with Silent running and a Silenced weapon, I've found myself a useful person for this role. Either a sneaky fast kill before the enemy know I'm behind them, or just spray at everyone and draw fire from the whole enemy team - if you time an attack right and just spray at the whole enemy team, they'll all (or almost all) turn to attack you together, each assuming they're your only target. That means they're all out of position when your teammates charge, assuming you timed the attack right.