Supertasters - What distinquishes them from "normal" tasters

I found an interesting article on what is referred to a "supertasters". These are 1 out of 4 of us who have taste buds that are much more sensitive than others. Supertasters will have more bumps or fungiform papillae on their tongues. A supertaster may have up to a hundred times more that non-supertasters. It is almost hard to believe that one's tongue verses another could carry so many more taste buds. Inside of these bumps are where our taste buds are contained. Those with more of the fungiform papillae with have a greater sensitivity to bitter and sour taste. The bitter and sweet chemicals are larger in size than the smaller salty and sour chemicals. Genetic testing are currently studying phenomenon of our fungiform papillae further. Many bitter tasting chemical are ones that can cause us health problems or even be toxic to our systems. Our bitter taste may be a part of our genetic self-defense system. Some may see this as a blessing whereas others may feel that it is an hindrance.  
For more interesting reading please take a look at this article: http://www.theatlantic.com/technology/archive/2013/01/the-lab-accident-that-led-to-the-discovery-of-supertasters/272522/