I think there is more here than that. Each part of the world has different laws around warranties, etc. The argument years back was that Canon wouldn't honor gray market because their price points in areas of the world those specific warranty requirements baked in their prices. So somebody getting their hands on a unit that was much lower due to lower warranty coverages would still send that into their own country's warranty center, expecting a free repair, and Canon was trying to prevent that.
Now with the world economy in a different state than it was in the early to mid 2000s, and that the prices are locked in for the most part, and raised in other areas of the world where they used to be less expensive, this black market price paid vs warranty coverage seems to be a moot point, and I can completely understand the confusion now.
Canon can only address MAP, which is what retailers advertise the camera for on their sites. That doesn't mean they can't sell it for less in their stores, or via unadvertised specials, they often do. I don't see how that matters in regard to gray market at all. MAP practices also have NOTHING to do with consumers' perceived value of a product, it has everything to do with profit margins and trying to keep all the authorized dealers playing fairly, and because of antitrust issues. MAP doesn't benefit the consumer at all from what I can tell.
MAP - http://www.americanbar.org …rtise_price_policies.html