The real measures of the 'Affordable Care Act' are how much healthcare costs are reduced and how much the quality of healthcare has improved.
Before the Affordable Care Act, the US was spending a higher percent of GDP on Healthcare than any other industrialized nation. Before the Affordable Care act, the US was ranked lowest of our industrialized peers in terms of quality of care.
2010 Survey US Ranks Last
After the Affordable Care Act, the US is still spending a higher percent of GDP on Healthcare than any other industrialized nation. After the Affordable Care act, the US was ranked 11th out of 11 industrial nations in terms of quality of care.

2014 Survey US Ranks Last.
It's possible that all of the savings and improvements from the ACA have not filtered into the data yet, but if anyone expects our international rankings to change significantly based on the ACA I've got a bridge to sell you.
Per Capita Costs are essentially the same miserable incredibly expensive costs as before the ACA. Our international ranking is the same miserable incredibly poor ranking as before the ACA. We still spend more on healthcare and get less in return than virtually all our international peers. We still have 30 million uninsured.
We blew our best opportunity to really reform our healthcare system. Yet some are content to tout the incremental improvements of the ACA because...Politics. I guarantee those same people would be daily attack dogs had it been the other team that pushed through the exact same legislation.
It's nothing to be proud of. We need to fix it so Americans receive the best healthcare in the world....That's the Healthcare we are actually paying for. It would take the Democrats to admit it's still severely broken and the Republicans to actually bring some new ideas to the table. I won't hold my breath.