I can get the backs of some cars off the ground (not really move them) and I pull 230.
Funny story though, at a party a few months ago myself and a friend who pulls about 170 moved a car that was parallel parked out to 90 degrees, kinda... blocking the road. Long story short, the cops came...
Damnit, I shoulda told that to the guys at my gym when I cracked a 20kg plate a few months back. :(
Have you proposed to Mark Rippetoe yet?
That statistic is also skewed by the fact that most lifters aren't pussies, so would only admit to being "injured" if it stops them from lifting.
And you think that this is just as safe as squatting in a power rack? You think there's not much risk of cracking/breaking plates? What if you were to lose the weight forwards rather than backwards?