"I think a lot of reviewers end up deciding what they want to give a particular game (as a score) and then justify that score ..."
Bingo.
For more fun, look on gamerankings. Wii Sports has a 76.5% on gamerankings. Wii Play has a 60% rating even though it will outsell Halo 3 in the US soon.
Simply put, reviewers don't review anymore. They simply spit out what the publishers and "elite gamers" say.
There is no such thing as a console war. This is the first step to game design.







