Deathstroke in The Dark Knight?!?!?!

It came as a minor surprise that Two-Face would play a major role in The Dark Knight (or that the Joker may be a more minor character than we have been led to believe). However a HUGE surprise may be the inclusion of Deathstroke in the Batman movie!
Mattel revealed a Deathstroke action figure from The Dark Knight film line.

In other comic book toy news: How is it that DC is light years ahead of any Marvel toy line??