Sorry, I don't the answer to that one. But I have recently purchased new Michelin tires for my Genesis and did some research on them. Most of the top Michelins use very sophisticated tread compounds (sometimes multiple componds in different places in the tread) to get a smooth and comfortable ride, while at the same time having excellent handling.
In general, even though almost all of the top-of-line Michelins are quiet and have a good smooth ride, the very smoothest ones are
NOT the energy savers, since they are designed to have better rolling resistance and are a little stiffer. Probably the Michelin's with the best ride are the Michelin Pilot Sport A/S Plus (for Genesis 17" or 18" wheels with Y speed rating) and the Michelin Primacy MXV4 (for Genesis 17" wheels in V or H rating).
However, the most expensive Michelin Energy Saver tires probably do have a better ride than many non-energy saver type tires from brands other than Michelin.
http://www.tirerack.com/tires/surveyresults/surveydisplay.jsp?type=UHPAS
http://www.tirerack.com/tires/surveyresults/surveydisplay.jsp?type=GTAS
I chose the Michelin Primacy MXV4 becasue I have 17" wheels and I came to the judgement (based on reviews, published research, etc) that they had a little softer ride than the Michelin Pilot Sport A/S Plus.
If I had a 2012 Genesis, I might go for the Michelin Energy Savers, but I need a little help from my tires.