Cubans are bigger, plain and simple.

Now, people from Argentina, Uruguay are white !90% spanish.. like said before.

The rest of central america and south america is mixed with Indian ( most of the population) Panama, Brazil, chile ahve a lot of african blood mixed with indians and spanish. :).

Now, Caribbean is much different. Cuba is not like the other islands like Puerto rico ( they look mostly alike) For example: Dominican republic is 80% black and the other spanish ( no indian)
Cuba: is moslty spanish mixed with african decents. By 1515 the entire indian population was extinct in Cuba. There were less than 5% from the 8 million indians before Colon in the country. By the 1600s there were no pure indians at all.

Myth says black are bigger. People say cubans are bigger than other hispanics ( making them bigger than white people by default)... everything is a myth isn't it?