Yeah, definitely. It's not so much his stature as his look and characterization. In the book, he just seems like an honestly nice guy and has this look of childlike optimism on his face, which makes the revelation that he's behind everything all the more surprising. In the movie you more get the sense that he's a pretty ruthless businessman; he just looks like a schemer from the get-go, so it's no big surprise when that turns out to be exactly the case.
Also, lol Eye of Ra codpiece.

