What is
usually ignored in discussion of this topic is that
language is spoken at
varying levels of sophistication,
education, etc., such that in
any country in which
any
language is spoken you find a
continuum that runs from
unintelligibility to
crystal-clear perfection. Add to
that another dimension of emotionality and
rhetorical
richness.
I remember an occasion in Italy in which an Italian asked
three English English speakers which of them spoke the best English.
Each of the three immediately responded, "I do!" The first
spoke something not far from cockney, one spoke fairly
well, and the third was a youth of aristocratic extraction
who spoke so well that you could listen to him all day
long.
Listen to speakers from England, the US, Jamaica, and India, and
you will find that when people "speak well the English"
they speak in much the same way, no matter where they
come from.