>>48640487affection is fucked. Or at least it was in sw/sh, terrible fucking mechanic. That plus forced exp share made the game a joke, and that was despite sw/sh offering a -somewhat- balanced level curve (I was under leon's average level by the time I got to him). In bdsp, while we can't 100% be sure what the leaker did and did not do, he was pretty consistently overlevelled for each encounter
So the expshare + affection systems are going to totally remove any sense of difficulty a mainline pokemon game might have had