The portages might be shorter on average, (although I have no hard data on that) but finding them is definitely more of a challenge than QP...and they are not maintained...I experienced quite a bit of water, although that could be seasonal.  

Definitely check with Doug on motor (and chainsaw!!) ....the Park is unregulated, but check it out first so you don't have any very unpleasant surprises.  I brought my own canoe in...no problem with that!

prouboy