Reading Speed: Chinese vs English

I always wondered about mankind's languages and writing systems, one of the reasons I looked into Lojban (quite) a while ago. In an earlier post about writing systems I expressed my fascination about non-linear systems. But even with linear systems, we have alphabetic, syllabic and logographic systems. But it turns out the our systems are optimal in the sense that our cognitive abilities won't let us process more optimized systems, at least that is indicated by a study on reading speed with Chinese vs English - two major examples of logographic and alphabetic writing systems.