Paul Ecke Jr. is not a florabunda -- it is officially classed as a "shrub." Moreover, here it has smaller miniflora-like size flowers, but generally in large, fairly widely spaced clusters, on a big plant. Shannon's Delight generally forms its blooms singly, and on a small plant. The possible variations on plant size and bloom type in roses are endless, and any classification system is bound to have outliers. C'est la vie.