I think both reviewers would agree with the following from Manata:
In any event, Olson's book leaves much to be desired. It isn't anything like a "case" against Calvinism. Rather, it's more of a constantly repetitious list of unargued for complaints. There is weak theological argumentation, zero exegesis, unfamiliarity with critical issues discussed, and one self-excepting fallacy after another.The two reviews make many of the same points, but ultimately the problem is that Olson demonstrates a lack of serious engagement with the subject matter.