Another thing about the pictures of the two trophies is that both of them are in-game, since the models are on the Smash Bros trophy stand and the background one from the trophy viewer in the game. I don't think they'd release a screen of a prototype, either way.
And while the second trophy model was posted by Ubisoft, it had to have been sent by Sakurai's team, since, again, it's in game. Ubisoft might have both models, but I doubt they have access to a build of Smash Bros to be putting Rayman trophies into it.