Treyarch didn't draw anything from Modern Warfare 2 for Black Ops, because it started development a year before Infinity Ward's game came out.
That's according to company head Mark Lamia, who told CVG that in terms of development the two games are very much separate.
When asked how Black Ops will go about topping Infinity Ward's game, Lamia replied: "We started Black Ops a year before Modern Warfare 2 came out. So we didn't ask ourselves that question because they were making their game and we make our game. We're two totally different developments, two totally different creatives.