It's not even the amount that Tucker is getting that bothers me, it is the fact that he is earning more than Chan who has given infinitely more to the movie world, is much more highly respected and is a much bigger star.
Think of it this way, if Batman and Robin were actors, it would be like Robin earning more per movie than Batman, haha. :P
I mean, Tucker isn't even that well known, at least not over here anyway. Taking Chan out of the movie would hurt it more at the box office than if they took Tucker out. Like I said though, maybe Chan is getting a share of the profits which would probably net him a lot more.