I haven't stayed at POR(iverside), just POFQ, but I studied up on both before making a decision for my trip this year. My #1 reason for choosing POFQ was the small, compact size. #2 reason was that looking at pics & video, I found POFQ more appealing; it is Pretty and Charming, two traits that go a long way with me. I really enjoyed my stay at POFQ and will definitely stay there again.
Now, as a disclaimer: I'm not a pool person; a lot of people prefer the main pool at POR, plus there are quiet pools there (POFQ just has the one pool). I only used the food court for breakfast; a lot of people prefer the food court at POR. POR also has a table service restaurant, while POFQ does not.
My advice is to check out all the info here and on Andre's great portorleans.org site, look at pics and videos and consider your needs and preferences. There's not a bad choice here, it just comes down to your personal druthers.