Except that wasn't how it was seen. Vanilla and BC and Wrath were all seen pretty much equally up until Cata, with maybe Wrath seeming not quite as good as BC in a few ways. Cata was hated once the ZA patch came out, no one was complaining about Wrath - we were wishing for it back. And once MoP came out, while far from perfect or universally loved, it was far better than Cata - even most of the "Panda and Pokemon Haters Club" will agree with that. Now, a lot of people aren't liking what they've seen of WoD... your "pattern" is anything but.