Sorry to hear about your illness. I hope that you are back up to par.
Try here: http://www.kodak.com/global/en/profe...4024/e4024.pdf page 6
and here: http://www.kodak.com/global/en/profe...4046/e4046.pdf page 5
You see the response of the Ektachrome falling off at 20 c/mm falling below 100 whereas the Ektar remains at about 100 at this same point. The projected red response at 100 c/mm is not very good.
I again stress that contrast can confound measurements.