Steve could have had a canted gun too? He left it at a miss. I'm sure he would've elaborated on it if his scope was off zero after the fact. If he talked about it in a podcast, and can't understand how he missed, then my guess is it was still zero'd in. Otherwise he would know why he missed. A scope being knocked off its zero isn't necessarily the scopes fault.
Randy's rifle might have returned to zero, but did it dial up correctly? He missed at 400 yards, not 100. A scope can return to zero just fine, but still track like crap. Randy would leave that out of his bit too if it was the scopes fault.
My point is, to just assume someone missed because of what they're using is ridiculous. The scope and rifle combination will shoot more consistently than you will 9.9/10 times.