ACA v RomneyCare. I am not an expert to judge whether these systems are similar or just a marketing trick by Obamacarers. But a clear difference is that RC was a state plan. If it was so successful, there would be other states creating similar ones. Obama could have promoted it in IL or DC (did he?).
Maybe after say 10-15 states did well, there would be some (weak) argument to have a federal system. Otherwise, it just does not sound true.