And my question is, based on what? What makes Massachusetts a bad comparison? Why do you believe people would flock to Obamacare enrollment on the first day when that didn't happen in the state plan that Obamacare is based on?
Google the following: "was obamacare based on romneycare". Obama says yes, Romney says no. In this case I believe Romney.
Romney wouldn't even talk about Romneycare during the campaign. Taking credit for what the far-right wing of the Republican party deems "socialism" wouldn't have played well for him.