Well, the other key point he made was that we only see the obvious errors after they've finished mopping up all the other, more obvious errors. It might well be that they were focused on the other, more egregious stuff and didn't have the time to catch this one before deadlines hit.

You guys are reading too much of the wrong stuff into that interview. If your takeaway from what he said is that the play testers missed the combo then you should listen again. That's not what he said, it's not something he implied, and--particularly given how obvious the combo was--it's not at all a safe assumption.

"We were hoping the cost would keep it under control because it's not a cheap platform" around 36 minutes.

He then very clearly implies that the problem was the design team under rated the build.