Yes it's really filmed nice !!! These guys know what they are doing .
They used a lot of different DSLR cameras to do that. The best looking parts were filmed with a Canon 5d Mk2 (with expensive L-Lenses, like the 16-35mm), SloMotions with the Canon 7D I think. The also used steadicams, maybe external sound via boom and stuff like that. So that's not an averange Joe filming some wam videos. That's a lot of $$$$ of equipment with some people who really know how to use this.
All this made a quality video which is very enjoyable to watch !!!