Three rounds per second is pretty freaking slow.
Okay, here's the thing. Even automatic weapons putting out 10-20 bullets a SECOND don't put out a stream of bullets. Let's take a bullet travelling at a nice, even 1000 feet per second (say, 9mm range). If a gun is shooting 20 bullets a second (which is FAST for an automatic weapon), it's shooting a bullet every 0.05 seconds.
In that time, the previous bullet has travelled 50'.
If Batgirl can stand in front of people spitting out 9mm's and wait for the bullet to get within 5' of her then move (she has, has done so with faster bullets, has done so with MUCH faster bullets when they've been within ONE foot of her), then 20 bullets a second is nothing. To her, the gun isn't 'chattering away'. It's going Bang. Bang. Bang.
Bang. At 10', the first bullet reaches her in 0.01 seconds. She EASILY dodges it (as shown in her book - does it for fun).
She then waits 0.04 more seconds, or moves out of the line of fire at bullet-time speeds, or checks her nails. Whatever.
Bang. Second bullet. She dodges it.
That's if we're going to get all mathy about this. And we probably shouldn't, on Rumbles. But the point is, if we get mathy about it, she still has plenty of time. And will continue to have time if the same gun is shooting 30, 40, 50 bullets a second, assuming the darned thing can track her (hint - smallarms don't shoot that fast...).
To go with Rumbles rules, featwise Batgirl ignores automatic weapon fire as inconsequential, plays dodgeball for fun with four guys shooting at her near simultaneously from about 7' away, and dodges a sniper round that's within ~foot of her skull when she figures out it's coming (it was fired at her from stealth). She actually has another insane feat with bullets I'd like to post, but I'm still working out if it's SMvsFL or not.
Robo's gun, unless it's spitting bullets that travel at Mach 10, isn't anything she can't deal with.
Plus, there's the matter of Murphy tracking her while she moves at bullet-time speed.
Okay, the gun itself is based on a Colt Scamp, which fires 3 round bursts in 0.04 seconds per bullet. Not bad.
Point here is that even with that ridiculously high rate of fire for a 3 round burst, Cass can either:
1. Stand in front of it, stupidly moving back in and out of the target line, dodging each bullet separately or
2. Do the smart thing, dodge the first bullet, and watch the other two sail past because the aim can't be adjusted mid-burst.
This doesn't mean Cass can beat Murphy, but it does mean that Robo's gun isn't anything hugely special for her.
That still doesn't address the point of how she's going to hurt him. Flash bangs and sonics would do very little, if anything at all, it took the juice of a city power grid to knock him out for maybe a minute, and he tanks things far more powerful that what her fists or standard gear can dish out.
Side note, the bullet catch was in response to what looked like a sniper, it might just be an example of a very unusual aim-dodge speed feat. A long-range shot would give him more time to spot the shooter and track the projectile.
We do not get a clean view of what exactly happens and he could have easily caught it with a trajectory/intercept movement instead of actually moving to catch the bullet at BT speeds.
Or, he could be BTing. We simply do not know for sure.
Normally a bullet-catch should be straight forward (depending on the specifics of course), but for a dude with targeting systems like that it does get a little strange when we do not see the actual shot-to-catch frames clearly.
The Avengers: It is less of a movie and more of a Religious Experience.
It will change the way you view... well, everything.
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It's not his real face. Or, in the (IMO unlikely) event that it is, it's been modified in some way that makes it nearly as durable as the rest of him, given that it's not even singed by stuff like being caught in the center of a city block-shaking gas main explosion.
Peace is a lie, there is only passion.
Through passion, I gain strength.
Through strength, I gain power.
Through power, I gain victory.
Through victory, my chains are broken.
The Force shall set me free.
If he's tanking a gas station explosion it's hard to imagine him being hurt much in this fight. Unless..did he survive, but with damage? Or was he just completely unharmed? I know she's hurt people who are bullet proof before, but tanking a gas station explosion is a bit above merely being bullet proof.
Weird thing is, I could never stand the Robocop movies..could never watch one for more then 10-15 minutes.
A woman can move a lot faster with her skirt up than a man can with his pants down.