No, anmoose. A 5-star and a 1-star rating makes for an average of 3 stars, which is what I believe they would have shown.
Problem I had with the 5-star rating is they didn't break down the number of ratings per star category. Did people ALWAYS rate either 1 or 5 as YT claimed? I'd like to know.
Another thing about the star ratings that didn't work, is the 1-star rating. On the Xbox 360's Games Marketplace, users can rate games on the beloved star system, from 1 to 5, and we see the average. The absolute worst games can still earn a "star" when it shouldn't get one. I choose to interpret the rating between zero and four stars, simply be deleting one star right off the bat.
Sorry for the mini rant. If YT does implement the % system to augment the thumbs, it shall be a great day indeed. Deceptive crap videos might not as get as many undeserved views that way, and we can go watch something better.