The comparisons between Amer. ( Square ) Rumba and Intern. style in the strictest sense, have only the music in common, and even that can vary to a great degree.

Intern. style was formatted from Rumba/Bolero, and the Cuban style of Rumba(Sq.) ,( which was danced in closed position and cubans still do), was modified in hold/frame, to suit the general public, and dance teaching of the era .

Square Rumbas evolvement over the yrs, has departed ( as has most Latin dances ) from its original context, by adding much more variety, and in so doing, has affected its cultural significance .

Many Amer. studios still teach a much more relaxed leg action, in the Square format. This has consistency with the way that Cubans dance .

Like ALL dances done socially, they have become "copies " of indigenous forms, and most if not all, have taken on a new appearance.

Thories and technique behind latin dance, are always subject to analysis.

It always begs the Q.. do " we " know better than the " natives ", how to interpret their dances, rhythmically and in content ?.

Music today, has changed dramatically in many cases, and this has affected the WAY we dance, and the variety that we include in that process.It also has been affected, by processing it thru a competitve and medal test system, that tends to produce robotic styles and mechanical and predictable actions .
There was a point to this.. it was called uniformity.. it has, obviously good points.. BUT.. did it lose something in this translation?.

One always has to be careful, when improvisation and re- design of a National dance is undertaken.. we may create a hybrid which becomes so far removed from its " ancestor " that it no longer resembles its parentage !.. ( its already happened in some cases ).