Only 20% Of TiVo Users Own A Series 2 Device?

Only 20% Of TiVo Users Own A Series 2 Device?: "The other day while I was going through my excessive amount of news feeds (73+) I noticed that ars technica states that only 20% of all TiVo users own a Series 2 device. I’m not sure where ars technica got this information but from what I’ve seen the site seems to be reputable. [...]"