Radiant Rose (Cornus kousa 'Radiant Rose')

We sell three pink kousas: Radiant Rose, Rosabella, and Satomi, and as far as I can tell, they are identical: they all have long lasting pink flowers in late spring; they are all short fat trees (to 15′), and they all have good fall color; the first year they are transplanted, they usually are only slightly pink, but become dark as they mature. zone 5