On the reciever side, I also find Sony tends to overstate their Recievers Power ratings until you get into their top end gear. I checked a few years ago and it was funny... all their lower end recievers seemed to magically sit around the 100W/ch rating.
- Bottom ones didn't state @THD or tested refquency range. - Mid Range stated @THDs, but not frequency... - Upper end stated both.
...yet they ALL started around 100W/ch!
Sony HTIBs, if you dug deep enough were 1000W (200W x 5ch) into a 3 Ohm load @10%THD with a 1kHz tone.