I'm officially out of the console war because I am rich and white enough to afford 5 of the six viable gaming systems. I do not own an I-phone because I refuse until it becomes mandatory in my life, but I have the other 5.
Anyway, I did a quick google search and I found failure rates to be anywhere between 16.4 percent all the way up to 60% for the 360. Who you believe depends on which side of the console war you are on. 360 owners will go for the lowest and the ps3 owners will pick high. Again, I have 5 of the 6, so I really do not care which one is more borken than the others.
As for ps3, Sony claims that it is a 1 percent fail rate, but I am dubious of that number. I would guess that it is closer to 10 percent failure rates. For the record, because it is still part of this generations software, the Wii boasts an 2.7 failure rate.
The failure rates tend to be higher with 360 than PS3 because the 360 players tend to play their systems a lot more than the PS3 owners. Then again this does not matter because the Wii gets played with 2x the number of hours in a week than the 360 and it boasts the lowest failure rate of them all.
For the record: yes, because you sent it in means you got a defective one, so it would count as a broken one. Also if the fail rate is 1 in 3, that does not mean every 3rd person has a broken 360. It really means that out of 100 people, expect 33 people to have a broken 360, with either the RRoD or the Error 74 issue.