it is interesting to look at two McGredy roses, both bred in the same year, and with the same parentage.
'Beatrice' (which was a little taller), was classed as a floribunda, whilst 'Pania' was classed as a HT.
1968 Beatrice Flori. deep pink Paddy McGredy x [Perfecta x Montezuma]
1968 Pania HT. light pink Paddy McGredy x [Perfecta x Montezuma]