I think that may be a little harsh (no pun intended). Some people complaining about the Genesis ride have the early 2009 suspension (before mid-year 2009 and 2010 upgrades) which you probably never experienced. Someone going from early 2009 to 2012 is going to feel a big difference. More moderate difference between 2010/2011 and the 2012.
after reading through these threads over the past few months and putting 3k miles on mine i just cannot relate to those with issues. the '09's i guess it's justified (i never drove one) but there a more than a few on here that complain about the newer ones and according the car mags they describe the ride the same on all the years they test???? get over it (to those complaining) move on or go hide until June 2013 when the '14 comes out.