Depends on the situation, I guess. State, county and city SWAT teams in US are constantly being used (at least in major cities) and are often at the mercy of the media to second guess every move they make, so they are extremely efficient. I have no idea what you see on swedish tv, but our local SWAT guys kick ass. They have a huge amount of experience with situations involving CQB. I would imagine that most US city SWAT teams have more actual CQB experience than any of the national teams in other nations, simply based on the amount/type of crime in the US and the proliferation of guns. On top of which, I would argue that recruiting SWAT teams from the ranks of regular cops is the IDEAL way to go, as most American cops are very experienced at resolving conflicts with aggresive people with guns on a personal and compasionate level and not detached, special purpose units that have only been trained in a more or less one dimentional way to resolve specific situations.