Yep, no registration. Hope the cops pull it over!
There should be a line of writing, probably where it says "Airbus A330" just forward of the bottom of the rearmost door. Also, the tail number on top of the tail fin is missing.
Look at the second door from the front. On a real picture the painted "N" of "Canada" is on the door. In this picture, the "A" is on the door.
There is no star alliance logo between the cockpit and the front door either.
On the real picture, the stem of the maple leaf in the logo extends down through the circle of the logo but in the photo it does not.
Also, the plane looks too "clean" overall. The wings literally look shiny!
I must say a very well doctored picture!