In which case, ObamaCare can't fail, because you're measuring it against a ghost. No matter how bad things get, all you have to say is, "well, they would have been worse." That's a cold comfort when the unsolved problem is still sitting squarely in our laps.
As the sole reasonable conservative on the board Lynah, I'm a bit surprised you've taken this tact. Plenty of people get paid lots of money to do what the CBO does, which is forecast out future expenditures. As best I can tell, they had historical growth rates to project out healthcare spending 10 years hence. Then the last two years expenditure growth has come down quite bit (maybe from a general 8% increase down to 4%). So, like any good analyst they've adjusted their #'s, bringing down projected expenses by 500Bn over that time.
I don't remember what you do for work, but if two years ago you made an honest projection of what your department would spend, then as a result of some actions you took and some outside factors you went back to your bosses and told them that you'd been able to cut the growth rate of expenses in half, I would hope you'd be rewarded for that effort instead of having them tell you "well you're comparing it to a ghost". Same thing here unless you're of the thought that the CBO is really a communist infiltrated organization affilated with ACORN to prepare the Earth for an alien colonization.