I disagree. It looks like an f1 to me. I think arborescens and ferox (candelabrum for those that don't like things tidy) only slight floral differences....mostly color and slightly open petal tips.
Not anything that special but a not to ugly f1.
and btw come on now 16K hybrids? really? do you believe everything you read and hear? was this a little exageration maybe?

if there are 16 thousand crosses why?