^ Thanks for the statistics!
I'd say most dancers are more or less average height (so e.g. Dutch dancers' av. height probably > Japanese dancers).
Of course male ballet dancers, like ice dancers, should be taller than their female counterparts who they have to lift, so being very short is a disadvantage for a male dancer. In other words: Scott and Tatsuki would have a problem. Likewise, if you are a very tall ballerina, you'd better be a phenomenal solo dancer, because in classical productions you would stand out amidst the corps du ballet like a sore thumb.
The Balanchine tradition does prefer its women skinny and ethereal looking: long, slender limbs and relatively short torso as well as small head and long neck. But not every ballet company subscribes to that ideal - especially not the ones who do contemporary dance as well as classical ballet.