Google is always updating page rank within their own system. They just don't publicly publish a websites page rank for the public very often. A website with a PR-0 to the public could be a pr 6 in google's system and they just haven't updated it for the public yet.
Looks like you don't like Yahoo first. statistics aren't false. If they mean something, they mean it.
**thunderous high fives** I agree wholeheartedly. Just because the noobs think Google's the best thing since sliced bread doesn't make it so. For some things, mainly volume, Google is king. But depending on the market, and what you are looking to accomplish you can get better results in Yahoo/MSN. Anyone with some SEO, and online sales sense knows this. It always annoys me when I see these blanket statements of love for Google with nothing to back it up but opinion.
I am a fan of Google. With my second attempts, I failed to receive the verification email for my Adsense account. Few hundred dollars are now stacked in my adsense account. I am waiting to receive the email with verification code for several months. I am planning to request again to resend the mail for third time after few days. How can I be satisfied?
I think it depends on the location where the study held. If more respondents came from a certain location that they prefer yahoo, then of course yahoo will lead. Maybe this report is due to some issues that google faces today..