No, I'd prefer Radke over Hampton. Hampton's control is terrible (5.4 BB/9 innnings), and he is barely striking out more than he is walking, making him useless in the K department. His ERA and WHIP will also most likely hurt you, so he's a 1 category wins only performer.
Radke also doesn't get many K's, but at least he has close to a 3:1 K/BB ratio, and his WHIP is decent at 1.31. The only reason his ERA is so high is that he was giving up all kinds of homers early in the year. His last 6 starts have been pretty decent, and he's only given up 4 HR in those starts, so he seems to be turning it around and is less scary than Hampton, who seems to have 8 or 9 ER blowups once a month or so.