The key difference being, it's never been 100 degrees in Iowa in November, but Republicans have one in a landslide plenty of times.
Scenarios exist that could put Romney at 300+ electoral votes. And yes--he could be close in CT and CA. On the flipside, Obama could win in a landslide too. The fact is, it's too early to discount anything.
No, a win for Romney in CT and CA can be discounted just like Obama isn't going to win SC or ND. Of course I don't see how this conflicts with the statement that Romney can get more than 300+ electoral votes. He has plenty of ways to do that without involving CT or CA.