没省略,而且google出这是GRE一道真题
1.supporting evidence (is much more satisfying to report) than (are discredited hypothesis)
2.the detection of errors (is more likely to be useful) than (is the establishment of probable truth)
两句中括弧里的都是一样的成分以及一样的被动语态,符合than前后从句形式一致( parallel)