I wouldn't be upset, but I would be confused. If a game is reviewed as a 7, then it gets bumped to an 8, I would say the reviewer was too hasty in getting their review out and they didn't give the game a chance. In which case the reviewer should take more time in future to really get a proper handle on the game, making adjustments unnecessary.
If they dropped it from an 8.5 down to an 8 I'd say why bother? Is it really that big of a deal? And of course my first point also applies here.
While I wouldn't be upset by it I do question the need for it. I can't imagine anyone wanting to move a review score by more than 1 point. It's not like your gonna want to make a 5/10 game a 9/10 game all of a sudden is it?
Now 2nd opinion reviews (by a different staff member) might be worth looking at.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix