Zorbie. You wrote The monotonous ( equal length beats of the International Styles )
It is my understanding that the music being danced to is the same in both cases.
What you must focus on is the use of the music. As an example take a Cucaracha in the Rumba. To do it correctly first we step, and then we rotate the hip second, and not both at the same time. I was told many moons ago that in any dance a step is only a step. It is the gap between the the steps where we actually dance taking the Cucaracha as a prime example. Please do not look at DWTS in any country if you hope to see the International Style. It takes years to perfect and not just a few weeks no matter how hard they may train.