Discussion about gun regulations: Picture from a pressure group

This morning i found the following picture being shared from a (Mexican) friend of mine on facebook:

I didnt respond to him via facebook, since regarding recent events there a lot of heat on this topic. Furthermore gun regulation always seems to be a very sensitive issue.

Assuming this number of deaths by firearms is correct, the figures by themselves are quite meaningless, since the do not relate to f.e. the number of inhabitants.
So i took the freedom to do this:

Indeed a statistical relation between access to guns and death by guns seem to exist.
This of course makes sense, since death by other means are not regarded in here.
Also huge differences between f.e. SW1 (Switzerland) and the US seem to occur, although both enjoy quite lax regulation on guns. In SW1 every man finished with mandatory army service keeps his assault rifle (SIG SG 550/552) together with a package of 50* .223 bullets. Furthermore he can buy the handgun he served with at a well reduced price.
For me it is clear that gun regulations are only of minor importance for such extremely sad and senseless happenings as this week in Connecticut.