size doesn't really matter (except for the apk size, but nothing else).
it's not the same for each project, but it can be.
why? when you add to an object for example - behaviour "bullet" and "turret" - you get 20 lines of code in c2runtime, 10lines for each.
in other project you have bullet and no turret behaviours - you are spared 10 lines of code.
therefore you save.. well.. big massive max 1KB