IGN do alot of bull reviews but Duke Nukem certainly wasnt one. They gave it a 5.5 which was a fair rating. Wasn't a horribly bad game, but it was nowhere near to being a good one either. Last time I checked 5.5 is an average score. Average score for an average game. Can't really complain about that.
It's not like it was just IGN gave it a mediocre review either though is it. The metacritic rating for PC is 54 and the user rating is 5.8. Sure some critics are harsh and some user reviews are stupid but when you take an average from almost 50 reviews and hundreds for the user reviews, the general consensus from across the board is its not very good. And look what IGN gave it by the way, a 5.5, slap bang in the middle of the critics average and user average.
I think he needs to get angry at the whole gaming community then, not just IGN.