Lol if power concerns you solely in terms of digits then go out and buy a Bugatti Veyron..no weeping about those numbers baby..
But i think I understand his argument. He's is talking about hp per dollar if such a scale should even exist. He's saying that Ferrari charges you 300 grand (cdn) for an F430 whereas an M5 charges you 120 grand and delivers 27 more hp...
My response is then, have you even though about the luxury, or how Ferraris are hand made whereas an M5 is manufactered. People pay for the whole package man, the name, the style, the luxury, and performance is in there as well, but it isn't only numbers.
Be polite, Be professional, Be prepared to kill...