Yep. If they both follow the idea of the Gentleman is the frame and his Lady the picture than if his frame does not fit the picture what an ugly picture...
I totally agree with the image!
However, male perspective on frames differ, and the analogy is lost on most men. Don't get me wrong, we know what a frame is, and we can even build you one, a generic one, well, most of us probably can, but don't be surprised if the frame we build has little to no consideration of how it should match or compliment the picture in any way. All we need to usually know are the dimensions and maybe, color.
How many single men do you know own picture frames that were not bought by a girlfriend or lady friend? At least in my circle of about 20 guy friends from high school and college, the answer is zero. Supposing there was an outlier who did have a frame, I can count on less than one finger how much thought was put into how important it was for the frame to actually match and suit the picture. I guess the, "frame", reference means many things to many people. The analogy itself is beautiful, but in order to bring about the right function, it seems to fall short in a lot of male brains. A picture frame, however good, is rigid, it goes around the picture, and if it's a reusable frame (is their any other kind?...!) you can go through many photos in one frame without having to adjust the frame one bit.
Also, if you ask men to portray something, they typically use their arms, and almost only arms and some times, legs, to portray that which you are asking. The body is rarely brought into it because we're just not mentally programmed to feel and express with our bodies: that should be innate, yes, but society beats it out of us by the time we are about 8 yrs old. We like tinkering, playing with things, and holding things. Even our equipment (ahem!) is outside of our body.
However, the concept of an embrace, with the right energy flowing through the body, arms, etc, seems to fix this misconception of a rigid one-size fits all, "MUST maintain rigidity at all costs", image. Then again, society beats out what constitutes a real touch and an embrace too, so that usually needs to be reinstalled. Basically, everything good dance teachers ask of us are beaten out of us by the time we are about 8. However, it is possible to take us back to 7 and remind us what it was, and tell us that's how it's supposed to be.
So how does this all relate to height? There's the other form factor that we are taught to believe by really bad dance teachers: that the couple has to match, somehow for the dancing itself to be good. The frame doesn't yield, you just have to find the right picture, and if the picture isn't the right size, oh well, it's not gonna look or feel right.
For competition, maybe there is some matching aesthetic that will give you an advantage, but as it pertains to dancing well, I don't believe there is, unless hugging some prescribed height of a person feels better than others.