Um, there's a bit of a generalization here. The nature of ESC growth has led to hypothesized treatments for neurodegenerative conditions, and possibly diabetes. But their strongest potential is for research, not clinical therapies. Nor have they shown much potential for cancer treatments, while ASCs do. Researchers' excitement over ESCs is justified, but the potential uses were grossly overstated as these hypothoses reached the public forum. One way to look at it is that ASCs are currently best applied to therapeutic applications, while ESCs are best for researching the nature of the diseases themselves.
All of this is mute, however, because the study you've referenced did not utilize adult stem cells at all. They used cloned leukocytes.
Good day.
Uh..."moot" that is. 
Here is the problem with ESC they are super unstable. Most of the research that has taken place using them has resulted in the creation of cancer and/or death of the host(rats and rabbits). But anyways it looks like scientists are having more luck using modified skin cells at this point so we can let the whole moral debate go.
Commenting by HaloScan
