Ah okay then, was somewhat worried it was an error. Still I wonder how this changes things until such time that Horace does get her 1.7 boost...
*One number crunching session later*
Ooookay, assuming one pushed for a perfect Horace and has max affection, her skill still makes her better than Charlotte attack-wise if Charlotte is under the same conditions (max aff, max CR, max skill). Mind you the difference between the two units attack powers with skills on is minimal, but with me every point matters. If anything, assuming one has a perfect Horace, her use vs Charlotte is gonna have to depend on how well you did in Charlotte farming to get her UC down.
Skill duration/cooldown (assuming max skill lv, 10/10 and 5/5 respectively) is still the usual though with these two: Charlotte for when she's needed (15 sec skill duration, 34 sec reuse timer), and Horace for the long-term (30 sec skill duration, 50 sec reuse timer).