Carnotaurus is the one weird species I really wanted in my plastic dinosaur collection, but the scale of the one version available is just plain wrong, so no carnotaurus.
There appears to be some online debate on the subject of the museum. The sheathed/unsheathed state of the sword, the background, the angle of the dinosaur's body relative to Hiro, and the length of the arms/finger count (painting appears to have allosaur arms on a carnotaurus frame) appear to be the differences between the two.