I used to have the same belief, but I've come to learn that in practice a pump is less reliable. Not due to the shotgun itself, but under pressure they are prone to operator failure via short strokes. So, maybe a pump is 99.9% mechanically reliable and a good auto is 99% mechanically reliable. However, unless you wrap your hand around the bolt while you're shooting, you're not going to have stress induced failure with an auto. In practice, it winds up making the pumps more prone to failure. It's not the guns fault, but it's a failure nonetheless and both equipment and operator failure will kill you just as dead.
Zeke, as far as 930 love, none here. I've seen it fail Jerry a bunch of times and while I wasn't at world shoot, I did see the video of Lena's breaking in half mid-stage over there. If I recall correctly, it's because she wound up having to mortar it after a malfunction. She cleared the malfunction and then the stage after the gun broke completely in half.