It's certainly noticeably faster paced than CS:S, or at least it feels that way, and the levels have a lot more detail. I also think the character models look a bit more generic than they used to (except for the CT's anyway who always looked pretty generic) so maybe that's where some of that comes from. It's definitely still CS though. Brutal weapon spread, no iron sights, different movement speed with different weapons, slowing down a bit after jumping, etc. If you try to run and gun just like a COD game or something you won't get very far.