Maybe Zen will be the best thing since sliced bread,
Maybe! And maybe Skylake will be a resounding flop. I hope not, though, because it could well be the next Intel CPU for me, that's instead of the i7 4960X I'd already slotted for my next build. However, should the Zen prove to be a quality CPU with ample speed and performance, I may just upgrade my AMD machines bit by bit as well.
As for AMD's past offerings, I know they haven't been close to matching Intel's performance, but that was never the claim. I've been an AMD user since the early Athlon days and, apart from one 939 socket CPU, which was discontinued shortly threafter, and thus, compatible motherboards disappeared also, I've been more than satisfied with my AMD purchases, with the FX 8350 more than adequately meeting my needs.
I don't do any serious gaming, so that has never been an issue... an old P4 box with 2 gigs of RAM and [non-net-connected] XP serves me well enough there. I do, however, edit and convert video, music and family photos, etc, and the FX 8350 is no slouch. Put it this way, the i7 4790K might be a tad faster at completing the same or similar tasks, but only by a few nano-seconds, and that I do not mind. Were the difference to be 20 minutes or up to an hour, well then I'd obviously be looking into a faster, more powerful CPU.
At the end of the day, all but one of my AMD purchases have delivered according to my needs, and if I need a high-end CPU, then I have the 4790K for all those resource intensive tasks that people seem to think the AMD's can't handle.
As for my being facetious, it was done with tongue-in-cheek and was not intended to be taken seriously.... hence the >
to denote a bit of silliness.