Pittsextra,
My post does say quite clearly that my technique refers to displaying specific categories of aircraft including Cat G (which covers the Hunter) and I did say that I have no experience of flying these manoeuvres in light aircraft. Also, competition aerobatics is not the same as display flying and so not really relevant here.
I made no comment on the attitude at which the roll was commenced in the accident manoeuvre. Again, I just stated my technique. The apparent angle at which the roll appears to commenced on a video recording may be influenced by camera position but without photogrammetry analysis it is difficult to be precise as to the angle. However, I am sure that you will agree that for a given pitch rate and airspeed during the pull-up for a 1/4 clover, the lower the pitch attitude on starting the roll then the lower will be the apex height; this is just geometry and not type specific.