I suspect that what all the quoted cars have in common is their batteries needed to be replaced well before they actually were. And if properly load tested they would all have failed.
According to this site http://autorepair.about.com/library/.../aa101604c.htm
a good fully charged 12 volt battery won't drop below 9 volts while cranking unless it's below freezing. Yet, thanks to Toyota, our RAVs will still start, albeit somewhat slower, at 8 volts with a battery that's on its "tenth life." That's why the "just replace the battery" answers usually turn out to be right.
Philosophy: On the first page the site says, "If you only think about (testing it) once a year, fall would be a good time to go outside and spend some quality time with your battery." Yeah, like that's gonna happen! It's maintenance free isn't it? Instead we'll run it into the ground, beat a dead battery and then complain it was junk from Toyota that let me down. But we get even more POed if someone tries to sell us something we didn't absolutely need.
As for me I will use it all up but replace it one start before my wife gets stranded!
I use batteries, usually from Walmart, with a 5-year warranty with 3-year free replacement warranty.
BTW, I wonder how long the 100-month (8 years, 4 months) Honda battery that came in my used Accord will last?