Doesn't have the "wow" factor this time around, but...
Just keep in mind that last year, GRAW earned a 9.2 from Gamespot and a perfect 10 for its visual content. Since just about all of us have played Gears of War, we're going to be a little jaded now. It's still a damn sharp game from an eye candy standpoint, and textures and enemy soldiers seem to bear more detail.
GRAW 2 does continue to impress in its attention to detail: the masterful control scheme is generally the same, the array of weapons and other toys is unsurpassed, and the tactical elements aren't overbearing to deter the shooter fan. In other words, everything GRAW did so well in March 2006 is being done again in March 2007.
If you aren't familiar with the Ghost Recon series at all, and you've got a 360, go pick up the original for $30. But if you relished the first title's single-player and multiplayer modes, and were ready for more, there's nothing fundamentally wrong with GRAW 2 whatsoever.