Can anyone confirm the hardiness?

This rose should ought to sell well in the North American market, if it is what it appears to be, a hardier improvement on Abraham Darby. Might anyone from Europe be able to comment on disease resistance, and has the problem of drooping blossoms been solved?

I am surprised by the claim of hardiness past zone 3, but even if this cultivar were possible in 4 and 3, it would surely be sought after by cold zone North American gardeners.

Northland Rosarium? Palatine? Somebody needs to import this rose, which appears to be even more beautiful than Abe.