JAB, what Funked said.
But I will say that flying "virtually" gave me a very good base when I got up in the air with the real thing. Not exactly the same, true. But my Instructor pilot thought I was joking with him, and after the flight asked me how many flight hours I REALLY had, and when I told him I had a total of a half hour in a Cessna 172 when I was about 12 years old, he called me a liar to my face.
I keep hearing tales of "killed at 1k or more" all the time, but why doesn't anyone every get a film of it??? Its like Bigfoot stories. Lots of hype but no proof.
You might get an odd MG ping at 700 or so (and I don't think I've been hit at even that range), but rarely does it do any damage, and then its only if you are flying straight and level. Even the slightest bit of out of plane movement and its almost impossible to get hit. Most people get killed when they get a ping, panic, and turn around to fight from an inferior position
Yes, if your coming from WB's, the guns here are lethal as all hell. Which is right? Thats hard to get a definitive answer, but I'd personally bet on the AH side.
In WB's you knew you could "take a few pings" and not worry about it. This lead to long drawn out fights where you had to stick to the enemies six and hose him down for extended periods. Which further lead to long conga lines of planes following each other down to the deck. Which typically favors the turnfighters who can get in position and stay there longer. Admittedly this leads to longer fights.
This is no "definite" answer to this question, until we all have computers that can accurately perform real time FEA analysis on every portion of every plane component that your modeling. I mean every strut, every wing panel, every fuel line. Every little thing. And I'm talking a whole hell of a lot more complicated than what Hotseats claiming too do.