The antiMuslim arsonists are surely skinheads. The difference between Europe and America is that Europe has a substantial "white power" faction that is much rarer here. Europe hasn't come to grips with issues of white racism and antisemitism.
The difference is this: if Christians burn something down (a Madraa, a training/indocternation center) it is done at night so no one is hurt. Do you think the muslims would do it at 3AM or 3PM?