Uh, the fastest time on that list an SLR. And the difference between the Leicas and the 35mm slrs on that list is measured in 10s of milliseconds. The difference between the Leica and the slowest 35mm slr on that list is one tenth of a second. So there may be a few situations where 1/10th of a second might be visible on your photo. If you can even compensate for such a small difference in your shooting. And again I say, if you can do that, then you can do it with any camera.
I agree with you, every camera is fast enough, the bigest lag is in our minds.