TexasCHLforum.com

From that article above:

But Hubert Williams, former head of the Newark police department and president of the Police Foundation, said that the idea that average citizens with guns could keep a theater safe only makes sense "on a piece of paper."

"Reality is much more complicated. What if you pull a gun out, take aim and someone else thinks you're the shooter?" he asked. "Would you stand up against an AR-15, AK-47 military-style assault weapon? Give me a break."

"give me a break?" Wow, what a jerk! So surprised to hear that from a LEO. He must have been one of "those types" who lecture any CHL holder they come across about why its a bad idea they have a CHL and how they don't have enough training and they're going to get someone killed (yeah, the bad guy!).

I really think a CHL would have been able to do little to nothing. Too much chaos, its really going to depend on
1. Is your family with you? If so then getting them out safe is first priority.
2. How close are you to the gunman when the shooting starts? Is the exit closer? Are there people between you and him? Additionally the dude is wearing some kind of armor. Is your caliber sufficient to penetrate it?

CHL is not a batman license, even if you are watching batman.

Carrying or not I think most of us would have been pretty much out of luck. The morning newscast indicated he was wearing bullet proof vest and a riot helmet.
I know for sure my .32 would probably not even be noticed by him... My plan would be to leave quickly. If I were there with like minded friends like myself maybe we could have come up with a plan to take him down physically.
Bad situation... bad bad bad, I really can't wrap my mind around any safe way to stop him from killing those people.