I'm not sure I want to get into this debate here. There is a lot of contention around this question and there are lots of variables to consider - such as manufacturing process, carbon used, steel used, weld quality, etc.

My gut feeling is that a Nasbar carbon fork will be stronger than a "cheap" stock steel fork on a KHS.

They don't make the Boeing 787 out of carbon fiber for nothing and there is a reason why <90% of the bikes in the TdF are made of carbon. Anyway, that's neither here nor there.