See my post above. He built a poor rotation. He also brought in guys that have talent but are injury prone or have no baseball sense.
That's easy to say now, but at the time on paper it was as good a rotation as there was.
Dickey had won a Cy Young and had multiple good years.
Johnson was a stud.
Buerhle was a crafty leftie that would throw 200 innings and win 12-14 games.
Morrow appeared to be a guy on the verge of stardom.
Romero was the once future ace that was going to regain his confidence by taking on a reduced roll.
And Happ was an experienced veteran ready to fill in.
It's almost amazing when you look at it in hindsight. Every single assumption the Jays made - with the exception of Buerhle - completely blew up in their faces. The odds of that happening are astronomical.