IDK there's nothing challenging or skillfull about IV breeding; it's just tedious and time consuming. So I don't have an issue with people GENing in pokemon to cut time. It doesn't give oyu an advantage in battle it just speeds up the process of breeding 682 eggs.
Now, if the hacked pokemon...
In my opinion, the P's is 10x better than the 4u. Even without any Deco Pieces there's enough content to keep you occupied for many generations. The 4u is lacking in that. Without NFC downloads the 4u isn't worth it. I adore my P's, the downloads are so easy to use (and there are more of them)...