> I've always wondered if the difference is the quality of work that we do. For instance, I do a lot of graphical/games stuff, and there's no resolution in my head high enough to know that 200 pixels to the right is too far (or not) without recompiling the app and actually looking at it. Or if that shade of blue is the right one.

I get that there're some differences in the games domain, but I don't quite get your examples, because changing the position or color of objects seems like a data and not a code change. If you have these properties as data you might be even able to change them on the fly, in the running game, which will increase your iteration times quite a bit more than any faster compile times.