I think Canon has somewhat crippled the 5DMK3 to make way for the 4K DSLR. Given that 80% of all Canon DSLR purchases last year were for video-use (I'd link the article, but have lost the link), the "EOS-C" line is probably top-priority for Canon, and an EOS-C DSLR even more so.
True that. I understand people saying that it's not for everyone. But to those who will still buy it please stop denying this camera had an horrible video upgrade (ON PURPOSE!)