WinnieBago,
There has been no fudging of the figures regarding Blackbushe Ops by either TAG or Blink, these are two professional operations and Blink wouldn't be operating under TAG's AOC if they thought otherwise.
Blink are well aware of the limitations of operating in and out of Blackbushe and operate to the book. It's a question of watch this space, the Mustang is capable of much improved performance which would remove most of the Blackbushe limitations and Cessna are cooperating in recalculating the original performance figures issued with the type certificate, it just takes time to complete the work that is necessary in order to achieve improved performance figures.