I think the baseplate has been changed in the 13 Malavitas and are like the Genesis ones... you can see coring in the heelcup for 2013.
And the Malavita baseplate is DEFINITELY softer than the Cartel one... the Genesis baseplate also seems stiffer than the 2012 Malavita one.
I just grabbed the 2013 catalog. You're right, the Malavita Baseplate did change. It's no longer the park blend baseplate for 2013. It is the same 30% glass filled nylon as the 2013 Cartels.
I honestly don't think the 2012 Malavitas are THAT much softer than the 2012 Cartels. But then again, I didn't get to do any significant riding with either as this was at a demo day.
The flex difference is even less noticeable between the Winged version and the Cartel to me.