I know there's probably no one who really knows. But to those of you who have gotten to demo brink. How does the damage seem to go? I hear so much that everyone's alot more resilient and in video it seems like it takes a full second of automatic fire or more to drop a foe. I know there are no headshot OHKs (fine with me). No knife face stabbin OHKs. But my main concern is I really want to see lights have a decent HP "set" possibly going down in the amount of time that someone would in BFBC2 but not including headshots just centermass gunfire obviously putting the mediums and heavies wherever HP wise.

Can anyone give me something to compare it to? How hard is it to gun someone down if you're moderately skilled? And how hard is it to get away if you decide to get the hell out of dodge?

I would put medium at +- ET max health 156, light at ET's 120 and heavies around 200. Fewest bullets needed to kill a medium at close to semi close range, without missing: 4. Of which 3 headshots and 1 random hit or 5-6 torso shots or 10-12 feet/arm/leg/hand shots.

Note (1) that close to semi close range is consider as standard in this case. Bullets drop damage over range.
Note (2) 36 health difference is really a lot in that game, especially in 1v1 with someone that has 156 health.

That is what I would like to see. I'm pretty sure that it will be balanced in another way.

The lights health is fine, because of how they can move. If you're using a light then you need a lot of movement to do anything. Otherwise you will get destroyed by all the other classes.