Where are you getting that statistic from? I'm not saying it's wrong, I'm just interested in seeing a decent source for statistics.
Also guys, this AT gun sniping happens more often than many of you are saying, and it happens at longer ranges too. A sniper should not get hit by an AT gun at long range 99.9% of the time. I had a game where I was charging PGs at an AT gun to clear it, and the AT gun sniped one of my squad members. This buggered up the whole squad while the remaining three members had to reset their position before the can move again. The AT gun used this time to move away. Bullshit.
From the fact that there is 7.5% for AT gun to hit infantry model at near distance.
At far range its I think 2.5%.
Can't give you a source as it doesn't work anymore, but thats what I remembered.