The reactive and non-reactive scattering dynamics of hyperthermal O and O2 on a carbon fiber network (FiberForm) at high surface temperatures were investigated using a molecular beam- The data obtained from an earlier analogous study on vitreous carbon were re-analyzed in light of new insights from the FiberForm experiment and compared to the results of this experiment. The results from the analysis of the data on the oxidation of FiberForm and vitreous carbon indicate that the chemical processes occurring on both carbon surfaces are similar. The differences in the reactive and non-reactive scattering dynamics could be attributed to the higher oxygen coverage on the carbon fibers of FiberForm, afforded by the microstructure of FiberForm which promotes multiple-bounce scattering and a concomitant increase in the sticking probability.