RR/dyno transmission losses

[Niall]

Why don't we all just compare our at the wheels figures... That we we'd actually know what sort of power each persons car is making...

Because most people see a higher figure and think oh that sounds better and because of that, everyone follows.
End of the day, it just doesn't matter. Its all well and good having shit loads of power but if the delivery of that power is awful, chances are your not going to be as quick as you hope!