Socioeconomic mobility between generations (opportunity). - The biggest gaps have been overcome through Americans, not people from Iceland ^^. We also still gold that ability to this day. If we keep going down the path we are going right now economically we could lose that privilege
. This alone makes America > Iceland.
Access to healthcare. - We have access to healthcare AND access to work to provide ourselves with healthcare. The people that are out of work aren't trying hard enough to find it.
Access to quality education. - Got that. Individuals just need to apply themselves to go to it and apply it.
Freedom from physical harm (including death). - We have the right to bear arms, and those that brake the law must be punished, therefore it isn't the US as a whole country that isn't protecting us from physical harm, but the people themselves are naively not protecting themselves.
Next.