You shouldn't start your day with nonsense. As it's "no coincidence", what is it attributable to?
I'd imagine the reason the likes of Panama, Honduras, and Costa Rica has more players of African descent on their national team is because of the makeup of their population. El Salvador and Guatemala has significantly less African ancestry than the big three UNCAF teams. It would make sense to reason therefore that the domestic leagues in both El Salvador and ?Guatemala has less of these players.... and as a result, they have a harder time matching up with the very physical and athletics nature of such players. Of course, I can be wrong, have been many times in the past.
You probably reading too much between the lines. Its clear cut - Its no coincidence that Guatemala and El Salvador has not had much success in recent times..., Guatemala has yet to qualify for a senior Men's world cup, while el Salvador last qualified some 40 years ago. the top three UNCAF teams composition tells the picture. You don't have to agree. Note Edison Cavani and Carlos Ruiz comments about Jamaica and T&T recently to the press. USA and Canada following suit as well. Mexico is an anomaly.
Look at the current gold cup group standings, surprise, two Caribbean teams are at the top of two of the three groups.
You don't have to agree with my assessment... its just an opinion.