[DustyPorViva]

You can easily compare races to control. Why? Because they are decisions in an online game that can control the outcome of your avatar. In this case, one of the decisions leads to an unbalanced gameplay... thus, just like an unbalanced race in an RPG, one of the options has to be balanced out. If the mouse movement mimicked keyboard movement, then it would just be 'the ability to move with your mouse", but it's not; there is a clear advantage of choosing one over the other. And in standard online game management, telling everyone to choose the best option because they can is not the solution, they should just fix it. By the by, you said it yourself, it is a different element of the game, and every element should at least be attempted to be balanced.
Also, nice touch with the whole delete me bit, I haven't heard that one before! You really know how to back up your statements.