Basically the 73 sounds about right for the score based off my experience. "Good" but not outstanding or even that great, especially in single player. The biggest factors for me that brought it down a bit were the complete lack of challenge for the vast majority of the game (think I died like twice in my entire run), the short run of the campaign, and the lack of excitement compared to having multiple people. It's not like the game was broken in any way, it just didn't really go above and beyond in any areas either. Kids would probably enjoy it more, especially if they're playing with another person, but that doesn't mean it should feel lacking for teens or adults which I feel it was.
For my money, most reviewers seem to overate games in general - it's almost as if many are factoring in only the 5-10 and ignoring the first 1-4. I try to keep the first 4 pts in mind and truly rate on a 10 point scale. Many *cough Ign* seem to consider and 8 only "good" while a 7 should actually fall under good.
"We hold these truths t-be self-ful evident. All men and women created by the.. Go-you know the.. you know the thing!" - Joe Biden