"...the major compromise is the codec which is now AVCHD at 24Mbit 4-2-0."
And the codec that they didn't use, presumably because it was too expensive, is used in the Canon XF100, which costs $3000 but does 4-2-2.
The Canon marketing people are trying to be a little too clever for their own good. Basically, the C100, C300 and C500 are all about double the price they should be. Doesn't Canon realize that they have competition?
They do realize they have competition. Sadly they think it all comes from various divisions within Canon only!
Look at how many little basics they crippled out of the 5D3. So instead of it continuing the revolution, getting mad praise, flying off the shelves like crazy to film people, and cementing themselves as the leaders in the market and making themselves hard to over thrown, they play stupid little games with internal market segmentation plus get greedy. What a waste.