Lets look at Ryan vs Krod in the only three skill statistics that matter...
BJ Ryan: 122K 35BB 4HR in 87IP
KRod: 123K 32BB 2HR in 84IP
Those numbers are incredibly similar, I would say so close that the difference is insignificant. Lidge and Gagne were only slightly better in those categories and I believe I said "close to" that level. The only thing keeping me from taking him right after those three is his lack of experience.