They did that because the topflite models were taking away from H9 ARF sales.
I compared the TF 1/5 mustang side by side with the H9. Ended up with the H9 thinking it would give me more of the pkane budget for the engine mods I wanted to do. Will I be happy in the end...reasonably so, but, in retrospect, if I were to think about it again, I should have dropped the extra cash and gotten the TF.
My life would have been eaiser I think...