I've gotton so used to them in their armour that I seriously cannot imagine them without it. So it beats me what their normal clothes could or would look like. *shrugs*
Yes I suppose he is quite frightening showing off his 'musclyness' O_O
But, even though he was a scientist, usually, Video Game Villans are not skinny, thin, twigs. They are sterotypically muscular and are commonly shirtless to make the crazed fangirls happy. XD
I personally think, that even though they didn't have the original actors, I think they had the best choices from what was available. Even though they didn't sound like the original actors, I liked them, I think Jack and Barbossa were the best and Elizabeth was the worst. =)