Healthcare is clearly more significant simply because it represents such a large share of the economy and it involves every single person.
Who is over-valuing the importance of gun control in America though? That doesn't seem like an actual problem. Democrats don't spend their political capital on regulating guns. Look at the Obama administration's priorities. They gambled everything on healthcare, but haven't pursued gun control much at all. Plus, the victims of gun violence are poor and black/brown so the public and the media don't care anyway.
It is interesting how we only hear about the need for "gun control" when middle-class white suburbanites get shot, isn't it? What's also funny is the about-face organizations like the National Rife Association make when black/brown communities get organized and arm themselves to protect themselves from police brutality, as in the late 1960s when the NRA championed the passage of the most restrictive gun control law up to that point.
I assume that if Occupy had armed itself and showed up at Zuccotti Park, this whole debate would look
very different.