In normal all ads which are shown always mentioned in below ads or top ads as Ads by Google. As it is big and I saw some website also ads by Google but their title is small seems like normal content which post by owner. My question: any way to do that and how.? you can visit this site as your sample http://www.wikihow.com/Get-Live-TV-on-Your-Website http://www.masternewmedia.org/ Look at their ads the tag line is simple like a post content.
If you aren't able to do it in adsense, I guess they could have modified it illegally or gotten some special permission as a premium publisher.