According to Wikipedia, the European Union (EU)
dropped the use of horsepower Jan 1 , 2010.
Probably because it is misleading.
However, Honda is real good about showing specification on its engines, since it is basically an engine company first and foremost.
Honda still quotes horsepower and torque ratings on their engines.
Bare in mind that the quoted rated horsepower is usually the peak on the HP vs rmp curve and maximum HP is usually at red line rpm.
Believe torque rating is a better indicator of engine umph and peaks out at rpm less than red line.