MWLL is based on Crysis:Wars. It uses the engine. That is what should be paid for.
And if anyone says, we do not lose anything to pirated software, he does not see the whole picture. The companies do less money than they deserve. They need to add some stupid copy protections, some of those make playing the game less comfortable.
In an ideal world I would not need to insert any DVD and still own legal versions of all my games.