The problem with so many of these scores is that we don't know what the basis is for them. Would an average score be a 5 or, if we are going by an academic standard, be a 7?
By all accounts so far (including the review above), Infestation seems like a solid game, with the only significant drawback being it's length...which leads me to another questions altogether. Does the criticism about game length also mean that the critics like it enough to wish there was more? Because that's not necessarily a bad thing.