That's true.The calculation is off. 30 polls said one or more of their PS3s failed. But the total should be more than 69 because some of us have more than one working PS3s. That's counting all issues polled here.
Whatever early studies there were, the failure rate now is clearly way, way above what it is for normal CE devices. Here's another Googled survey.It will certainly be interesting to see what the total failures tally up to over these 10 years. I remember because of all the hoo-hahs, someone did a study about 1-2 years into the generation and the failure rate was within 2% (for PS3).