I thought I just answered that, but I could have made it clearer.
Take a tutorial group of thirty. They are all IT Fobs, so they all do really well in the exams etc and get between 90 and 100%. What you are asking is if all of the above would get HDs, of if they would be forced into lower bands because only [X] number of people can get HDs.
Well, the answer is that they have ALL achieved greater than the prescribed 85, so they would ALL get HDs. However, there is more to it. Something about Bell Curves etc. This doesn't apply to individual tasks though.