Manipulating when and how Adwords site links appear is near impossible but it is satisfying when it all works itself out.
The above ad shows a South African advertiser whose ad text appears to have been 4 points. The advertiser has also set up matching site links and, because the ad is at the embedded site links quality threshold, the as text is replaced by embedded links (all except the last one).
This really stands out in the search environment. It is difficult to pin this down as a conscious decision by the advertiser however the use of identical site links and ad copy presents an interesting method of testing for embedded site links.