stugots,

I would say equally important and if either one is showing something negative I am wary of the system for betting. You want everything to line up right if your going to bet a system (and even then it can fall over in a heap some times).

If I had to choose one I would choose the distribution as I find it gives a better overall picture and it not as easy distorted by backfitting. If you plot a back fitted system the distribution will usually show it.