One of the reasons that we had a better experience regarding Brink, was because luckily when we popped ours in for review the patch had been launched so the game had an update or two...or three...
If you want to know what it fixes well...
Xbox 360 Update
"We've now put up our first game update on the Xbox 360, which went live at launch. It addresses several of the issues raised in some of the early US reviews of the game and brings with it some major improvements.
Most importantly, this update significantly reduced texture loading times thanks to improved hard-drive caching. It also improves client prediction when playing online - in other words, you'll experience much less "rubber banding" in multiplayer. We've also fixed several issues that could lead to the game freezing, and resolved an issue where Brink would insist on playing all of the training videos rather than just the introductory one.
If you've not yet got the update, simply restart the game while your Xbox is connected to the internet.
We've also been getting new reports of lag when playing online, especially in matches with lots of human players. We're all huge multiplayer fans here at the office and we know how important a lag-free online experience is. We're urgently investigating this issue and seeing what we can do to improve things in that area. Stay tuned."