Intel is improving cache, memory controller and additional CPU instructions while AMD is almost only raising CPU clock ( and wattage ). Intel was going that way when they introduced NetBurst and it was total fail. Now AMD is making kinda "multi-core netburst" in their FX series and it's simply a dead end.
Every new Intel generation since they moved to Conroe is about 10-20% faster on the same clock. Hard to say that about AMD.
Last time when AMD was better than Intel, was A64 vs P4 era. Since then AMD made Phenoms and FX, nothing else as every other series are based on these 2 generations ... all that in ~10 years ? Nah, there is also Kabini but AMD released it 2 years ago and made nothing to make it good chip for mobile devices.
If not ATI then we wouldn't see AMD on the market anymore as their shares on CPU market are constantly dropping and they are almost not counting on server and mobile market anymore. Office computers are almost the highest % of computer sales each year and for business all want Intel. What left for AMD is home entertainment and even there most users see that better is to move to Intel.
There is no pressure on Intel so they can delay every new series. We actually see that every new Intel CPU is delayed by 6-8 months. What is worse, Intel is not spending this time on improvements or fixing issues. Both X79 and X99 chipsets had SATA/SAS issues ( and still have ) so we got worse chipsets than it was planned. P67 chipset issues ( B2 stepping ) or 8 chipset/haswell series and USB issues are also well known. Intel simply knows that no matter what they release, it will sell better than AMD and with already much higher performance they simply can cut some features which are not working ( and introduce them later or replace with something else ).
I already said it couple of times but AMD for me is right now only benching toy ... maybe except Kabini which is working nice in my NAS