Bragging rights ...
The "high end" of this HEDT thing is all about bragging rights: Intel scrambled to release an 18 core part because they weren't about to have AMD deliver "moar coars" .
So now they have problems getting the heat out of this thing and the AMD part has an advantage there because its "heat generating area" is larger and distributed (because it has 2 or 4 widely spaced die under a bigger slug of copper).
So I guess we're about to find out if Intel's "process advantage" is real ... right ??