I tend to agree with Arthur and Kevin to a large extent but would like to again touch upon comparing the draw cycles of the two bows (with respective cam styles) in question.

For starters I think it would depend on the application that you plan to use the bow for. I, personally, would prefer a 70 lb soft cam/round wheel bow to shoot an activity that requires repeated shooting over a short time period as I believe the more rounded draw force curve causes less fatigue to the shooter. Though the 60 lb peak weight aggressive cam bow might reach a lighter peak weight it might also have a harsher transition up into the plateau and then down into the valley....and possibly a shorter valley to boot. In that case I do not think that a somewhat lighter draw weight would offset the effects of that harsher draw cycle in regard to the shooter's endurance.

Just something to think about.