IMHO many people get too excited about max. hp at max. rpm. My 904 with standard compression Wiseco pistons and stock airbox (w/UNI) is hitting almost 60 at 5250 rpm where the hp and torque curves cross. This is major usable torque and hp and higher in the most important power range.
The chart above is almost hitting 48 at the same rpm where mine is 60. That's a 12 hp difference. You'll never convince me that the 904 BB isn't the best bang for the buck.