One encouraging feature of Horn's performance in AA was that his K/W improved each month. Although, a Debbie Downer might note that his K/IP drove the improvement his W/IP was basically unchanged at least until September.
K/W in X IP
9/5 in 8.2 (June)
15/8 in 12 (July)
16/6 in 10 (August)
15/4 in 8 (September)