look back at my orriginal post - diesel engines are now starting to allow higher rpm so you're getting the benefit of increased torque (diesel has more energy in it) with the power gains coming from higher rpm.

it used to be that deisel engines were produced from heavy, but stong materials to cope with the increased compression, but we're starting to see ligher weight materials come in that allow significant weight saving so they can be pushed further.

All fuels have their place but my next car will be a diesel