My immediate thought would be that its too small, but the carnosaur when compared to the rider is quite big. I haven't seen one in person, but I know Warmaster is very small and I have seen some Epic Titans, which wouldn't be anywhere near big enough for any 40k use and they are the same scale. Try to find a picture of the blister (assuming it is a blister) on an online store so you can get a look at the size.