I have yet to see the show so cannot make any comparisons, I have not seen the judges remarks or scores, so this is purely my opinion.
I never generally like watching a rumba on Strictly as it is notoriously a hard dance to do as a beginner. Lots of balance, control, everything needs to be toned yet supple, lots of pressure into the floor needed to create the right leg and foot work and ultimately the hip action, fluidity throughout the body etc. Very hard to make look good, the slow timing will leave the (particularly male) celebs very vulnerable and exposed.
I have fast forwarded to Danny and Otis dance.....
My intitial thoughts are that it is a good effort, good lines and good arm movements. Danny is creating a good strong male foil for Otis beautiful feminine dancing.
I feel he is too light across the floor, he needs far more pressure through the legs and feet to create the correct action. He needs to settle into the hips more. Because he is not using the floor - lack of foot pressure - correctly, the hip action he produces is artificial. This is clearly seen in the rumba walks he does. It looks a little stilted and artificial.
For a simple example, for each walk, you step on the beat then settle into the hip for the body action. This is more difficult than it sounds as you have to add the bending and straightening of the legs, pressure into the floor, posture etc. Really not easy. The Pro's make it look effortlessly easy but they have had years of learning and practising their craft.
Good to get this dance out of the way early and hopefully Danny will survive to dance again. I am sure that he will have more success in the Ballroom dances.