In the gen 4 meta, there was 48 OU mons. Now there's 52, despite adding 13 new OU mons. So 9 mons that were OU in gen 4 no longer qualify, being completely outclassed by gen 5 mons. That's the power creep, the tiny percent of seriously powerful mons keeps encompassing more and more individuals. We've got a mon with base-700 stats in OU, and it's honestly not that good. What other generation would that even be possible? This doesn't even mention stuff like Choice Band and LO. What items has defense gotten that are even close to that level?