Counterspin Question: What is the best answer to the statement, "The reason Massachusetts didn't like the health care bill is because they already have it."

I don’t believe this to be true, but what facts/figures/polls/logical reasonings are the best to repute that claim? I’ve got a few theories of my own but I’m sure there are better reasons out there.

I’m looking for something that would sound reasonable to mainstream, moderate or center-left type friends of mine.