Why do people say Puerto Ricans speak a "Ghetto Spanish" compared to Mexicans?

Why do people say Puerto Ricans speak a "Ghetto Spanish" compared to Mexicans?
I hear people say that Puerto Ricans and many other Island Countries in the Caribbean speak the Spanish language in a "Ghetto" way as opposed to Mexicans who speak Spanish in a Clear and understandable way.

Can someone explain why people say this?

Why do people say Puerto Ricans speak a "Ghetto Spanish" compared to Mexicans?

Why do people say Puerto Ricans speak a "Ghetto Spanish" compared to Mexicans?
I hear people say that Puerto Ricans and many other Island Countries in the Caribbean speak the Spanish language in a "Ghetto" way as opposed to Mexicans who speak Spanish in a Clear and understandable way.

Can someone explain why people say this?

Why do people say Puerto Ricans speak a "Ghetto Spanish" compared to Mexicans?

I hear people say that Puerto Ricans and many other Island Countries in the Caribbean speak the Spanish language in a "Ghetto" way as opposed to Mexicans who speak Spanish in a Clear and understandable way.

Can someone explain why people say this?

What are the major differences between Latin American Spanish and Spanish from Spain?

I'm thinking of buying the Rosetta Stone computer program but there are two different versions of Spanish that they offer, Spanish(Spain) and Spanish(Latin America), what are the major differences and which would you recommend I learn, would I sound ghetto going to Spain speaking a corrupted form of their language(Latin America)