My Panasonic TM700 3MOS camcorder supports 1080p60 28mb/s AVCHD and the C100 only 1080p30 24mb/s AVCHD and my Panasonic GH2 beats the new Canon 5D MKIII in video quality.
Quote: Although the specification on the box says 1080p, with regards resolution the 5D Mark III is a huge let down and the $600 Panasonic GH2 offers a far more detailed 'true 1080p' image (whilst maintaining a relatively large sensor for video and interchangeable lens mount). The 1080p mode is not really full HD at all in terms of the real amount of detail in the image - more like 720p.
Other cameras such as the $5000 Sony FS100, $800 Panasonic GH2 and $3000 Blackmagic Design Cinema Camera offer significantly more in the ways of features and image quality for low budget video production.
Canon EOS 5D Mark III Review: Digital Photography Review