Here's another couple of things though...
The reason the ACA gets better poll numbers than Obamacare is because opponents constantly referred to it as Obamacare in their denouncing of it to make sure it was tied to him and the D's. So, especially low information voters out there, have heard the bad sentiments expressed about Obamacare, but haven't heard people attack the Affordable Care Act. Obama even resisted calling it Obamacare for the longest time. Also, they chose the name Affordable Care Act, on purpose. Anyone referring to the item that way includes the connotation that it is both affordable and that they care. Ever see a sign that says free puppies? The connotation, awwwww sweet little puppies. However, once you stop and see them and discover they are rot/doberman/pitbull mixes with a history of violent attacks, the warm fuzzy connotation is forgotten in light of the reality.
Also, as far as the polling on the individual items within the ACA (aka Obamacare), you are right. People say how great it would be to have A-Z! However, when you get down to reality and you look at the cost of those items, that is when things hit home. Who doesn't like the incredible homes of rich celebrities and athletes. They're amazing and lovely and the epitome of luxury. However, when you go to purchase a house yourself, most people don't even look at those and they feel lucky to find a nice 4 bedroom 3 bath ranch with a finished basement (ahem...ND fan cave), a deck and maybe a pool that they can live with the price of. {Note: Most people, can't even afford that nice of a place.} So, yeah, people will say they would LOVE to have this or that coverage, but the cost of having it all is prohibitive and most would say no and figure out the items they want most and find what fits for themselves.