Ford used the Peugeot 206 GTi as the benchmark when they developed the ST that's why they match the BHP and price.
It also helps with insurance costs.
I think the car doesn't need more power, just to run better.
The basic ignition/management system struggles to cope with having to meet Euro IV emmisions levels.
The Mazda MX-5 2.0 Sport has exactly the same engine as ours but with VVT, coil on plugs and a better brain, throttle body and catalyst.
Go and have a test drive in one, you be amazed at how the same engine can perform so much better!!