It would be interesting to weigh a worn out set to see how much lighter it is.
I love the Q3's. Switched from the 2 ct's . The Dunlops heat up faster (according to my TPMS) and I think the carcass is stiffer as they are better breakers, especially with low tire pressures. But I would take a set of Michelins if they were giving them out! Most tires are generally pretty good these days.