Crosman determines what it will "allow" for Canada. Any dealer can bring in products if they can find a US distributor to ship them- but Crosman won't do it. As Crosman believes (accurately, in my opinion) that the market for "Restricted" pellet shooters is quite limited, they just won't ship to Canada.
Also, and maybe not a big deal if someone really wants one, but as a result of Crosman not "approving" them for sale in Canada, there is no warranty on such things through the Canadian warranty program (i.e. if you want it to be fixed under warranty, it would have to be shipped from, and back to, a US destination.
Also, not sure what you mean "restricted FPS rule"? They are both over 500fps and considered "Restricted" firearms as opposed to "not restricted" long guns- so a person also needs an ATT to move it around.