Teeg is usually better in those MU's where you want Meddling Mage as Teeg can shut down multiple problematic cards at once while Mage only denies one of them. For example, agains Landstill you don't want them to resolve Wrath, Humility or EE - or any combination thereof.

EDIT
@crz87: It seems that your meta contains next to no combo, am I right? Or are you just crossing your fingers so that you won't get paired against it? :D