The demo will be in the XBox Marketplace on June 5th so you can decide for yourselves.
You can't compare this to COD4 which is a "run and gun, spray and pray" game for every n00b on the planet.
If your team does not play this game with tactics, you certainly will lose vs. a team that does.
Personally I enjoy a tactical game vs. a run and gun, where thinking and planning are required to win.
Just my .02
