There's no winter version of that tyre to my knowledge, i'm guessing the MFD thing was just setup by mistake on yours.
I have the dunlops and i like them, and i usually put pirellis on everything. The Dunlops seem good, they ride great, very quiet, and they're really nice an progressive. The main criticism are that they wear too fast but we'll have to wait and see. What i can say is i don't have any critcism of the balance of the car on these tyre though, it's nicely balanced. The demo i drove was on them too and i took it to a little place i use as a skid pan and had the arse out, playing with the balance, no problems, the salesman was with me too and was impressed with the car. That's why i wasn't too dissapointed when mine didn't come with pirellis. I haven't driven one on pirellis so i can't compare, but i'm happy enough with the dunlops, i might even put these on again depending on how they perform as they wear. They seem to do OK on the occasional bit of snow and ice.