I think personally that European trucks definitely have the edge over their American and Japanese counterparts.
By the way when I say European, I DON'T mean Pommy crap.
The European trucks usually have higher tech, quieter motors, better retarders and braking, turning circles and chassis and overall build of the vehicles is far better.
I make a lot of this basis upon lots of vehicles I have driven or worked on in my numerous jobs.(coach driver & auto electrician)
As for using Scania's for fire appliances, they are exceptionally good and I don't know of any firefighting crew that honestly don't like them.
Regards, Mat