Not the way I see it, if case cracked first under very high load conditions, I suspect the R&P would break contact extremely fast with a few broken teeth as that occurred. If the R&P became locked solid with a broken tooth leading to more broken teeth and quickly escalating. I can visualize force building enough to destroy the pictured or any case. I don't fault the case here based on what I see any more than I would blame an Alum KB block destroyed/windowed by a cheap over revved failed con rod.

edit, under very loads causing any initial crack in the case, that would be the end of any case flexing and failure would be immediate.