dick duffy has to work so hard to get people out
do you mean because he uses a lot of pitches? because it's weird how perception works. medlen gives up 3 runs in 6 innings and people rave. dick duffy does the same (or better), and you have wc08 comparing him to guthrie.
and it's not like the hitters are getting harder contact on dick duffy, or even more baserunners. the difference is basically just pitch count.