If you rounded up every dancer that ever lived, and trained them as long as you wanted to, not one of them would ever be able to do this:
I wouldn't be too sure of this claim . . . trouble is, dancers are interested in more than elevation and hoops!
Basketball is up and down (usually poorly down).
Classical ballet is also up and down (which includes gaining the maximum in bodily propulsion upwards, as well as controlled and hazard-proof landings), but it is also training in intricate footwork and musicality/ timing; total body stretch and control, and development of choreographic memorization of not only one's assigned body actions and steps, but memorization of every other accompanying dancer's role who happens to share the same stage at the same time . . . matching and corresponding long passages of music plus intricate timing and awareness of group interaction with many other persons.
The successful achievement and performance of corp de ballet is extremely difficult. Far more complex than a dumb basketball game . . .
Nang