"If a fighting style (Krav Maga) does not work in an enviroment with a fully resisting opponent with rules (MMA), how does it exactly work in an enviroment where there are no rules?"
If rules place restrictions on what you can do... restricts you from exercising the full range of "tools" you're given by what you study, then certainly it will be more effective when not restricted. Maybe I'm misunderstanding your question... I am very tired and haven't had much sleep, but the answer seems obvious.
"What is the real deal Krav Maga? Someone who's actually "Killed" someone with it?

"
Exactly! No, just kidding. Personally, I believe "real" Krav Maga is a curriculum that's passed from an IDF or ex-IDF instructor. This includes being taught by a student of an IDF or ex-IDF instructor. A lineage of sorts, just as I'm sure in BJJ circles learning from an instructor who learned from Helio Gracie can be considered learning "real" BJJ.
"Gi chokes? That's a laugh. I'd rather rely on Gi Chokes than the Submachine Disarms Krav Maga "teaches".
Seriously, Gi chokes?"
The gi chokes was a joke. I'm glad you found it funny.
"RBSD. Reality Based Self Defense. Biggest bounch of LARPers Live Action Role Players out there. How many eyeballs have you poked out? How many real knife disarms have you done? How many people have you killed? "
Sorry, haven't poked any eyeballs out, never disarmed any knives, and I don't think "killing them with kindness" counts insofar as a personal body count. Have you ever poked out eyeballs, or disarmed a knife-wielding assailant with BJJ? Any lives extinguished from blood chokes?
"Let me put this so you understand it. You are living in La La Land if you think you can disarm me armed with a gun or knife. Combat is chaotic, Krav Maga and RBSD attempt to teach you a response based on an action. If someone points a gun at me like this, I will twist their wrist like this. Sorry, real life doesn't work that way. The best self defense is not being there, or running. 9 times out of 10, you can do that, easily. Self awareness, and common sense are the best self defense you can have. No Krav Maga poke your eyeballs out while someone is stabbing you can come even close."
Conversely, I could say that you're living in La La Land if you think you can't be disarmed. Sure combat is chaotic, sure Krav Maga teaches you to respond based on an action. Would you rather they teach you to not respond based on an action, or respond with no action, or produce no responses from no actions? Martial arts, in general, is procedural, but if you think that a free-flowing thought process and calculation is restricted to BJJ, then you're mistaken.
Of course the best defense is not being there, or running. Krav Maga, good instructors, will teach situational awareness, and in drills they practice quickly neutralizing your assailant and then running away. Common sense is always the best defense... but is BJJ more powerful than common sense? If not, then this isn't a legitimate criticism of Krav Maga since what's good for the goose is good for the gander.
"For one on one fighting, excercise, and anything else, BJJ is greater than Krav Maga any day. Krav Maga INTEGRATED BJJ into it's curriculum, NOT the other way round."
All the more reason to take Krav Maga
"I'm more of a pragmatist. Sure go visit them both. Your type of personality ultimately will make the decision. It takes work and dedication to get better at BJJ. Blue Belt level is generally 2 years min. Which only means you know the basics."
Agreed. It takes lots of time and practice to get good at anything, and I suspect that this holds moreso for BJJ since there are many intricacies of the art. In this same right, though, this is why I would prefer Krav Maga... it's not difficult to learn and can be quickly assimilated.
"I would put money that a 6 Month BJJ White Belt would beat the living crap out of a 6 month Krav Maga student with equal time spent training. Or for any amount of time training."
Speculation. Regardless, you bring some very valid points, and it serves as food for thought... certainly for myself, and hopefully for Munki as well.